Hi,
let me be a good beta tester and give my collection of bugs/problems.
0. Let us see all the units in a stack. I often kill some weak monsters only to find another force of monsters there that is usually 2x or 3x stronger. Also computer likes to have 4-5 stacks of troops and I got no clue about it until I start killing them one by one. This is a must have. I don't plan to play a full version if this is not implemented. Sorry to say so and in such a way but it is a deal breaker in this day and age. If there is a way to already see this and I am stupid for know knowing it I apologize 
1. Coal Stones need to be accounted for when displaying monster difficulty. It cannot say Weak or anything near that if a monster has this ability.
2. Cities need better sight range. Units inside city need better sight range. Once I remove unit one square outside the city I can see a lot. It is stupid to keep a unit outside city all the time. That role is for scouts and to check out neutral/enemy area. Basic sight range of cities should be minimum the sight range of stationed units (not city guard) and maximum Zone of Control of the city (unless units inside see more).
3. List of units/cities/quests on the left needs to be scrollable when you got city screen open as the city circle in the bottom left corner covers a lot of these icons.
4. if I got a city open and the game is waiting for me to place down a building and I click on another city in city list on the left border of screen the game does not select the new city yet and you can still place the building in previously selected city
5. Remove placing new buildings if you don't click on a spot for building. Now if I open build screen and click outside the city (for whatever reason) the building gets placed down. If I wanted to place down the building I would have clicked build or clicked on one of the highlighted spots. I place so many unwanted buildings this way and it is SO irritating.
6. When you only got one hero and you get a new item only having options OK or EQUIP is not enough. We also need a GO TO INVENTORY option. I don't have a clue if the new item is better for my character from that screen and clicking OK is stupid as then I need to click more to get to inventory. When you got multiple heroes and get a new item you got a TRADE option which does what I want.
7. We need a way to set up our army placement before combat starts.
8. Enemy units still behave like idiots during combat. When I use ranged units they don't do their full move to minimize damage but move like 2 squares and give me free shots lol.
9. Magic is not taken correctly into account when determining faction power. I played Cersea and fought Magnar and his army of Juggernauts and many other high armor/high HP/high damage units. I killed like 5 full armies with fireball and haste and lost one wolf (I got from magic item) and one summoned warg. I fought all of them with 2 heroes, familiar, and those 2 wolves. The game should recognize that my main hero that does 70 damage per fireball and has 400+ mana for casting is 2x or 3x stronger then pure melee units. Magnar has a fair bigger number of faction points when we started fighting.
10. Let us build or determine how roads should go. Automatic placement of roads is terrible.
11. Heroes level too fast or tech/normal units don't research/build fast enough. Probably both. By the time I get proper units my heroes already own anything but strongest of monsters (especially caster ones). Actually you don't need any extra units but mages as they bypass high armor units which are normally most challenging of monsters.
12. There is not enough food per cities. Buildings give way too little and you have to wait way to long to build or research new ones. Growth is already a good limit on how fast cities grow, food should not be such a bit limit. Maybe it fits thematically but it is so stupid and boring to play with. Keep food limits for your campaign that you said FE will have.
13. I got selected to move me to new units once my current one runs out of movement points (or something like this). So I exit combat, level up screen shows up but camera has already moved away (I think same happens with new item popup). Wait with move until we level up/decide what to do with new item.
14. When I look at list of units on left border of screen I cannot know without clicking which ones still have movement points left and how much.
15. Movement is way to slow currently or there is too much areas that slow down units. In CIv games you could get upgrade for almost all slow units to reduce penalty when moving through woods/mountains/others. We need something similar here. Main hero leading the group should decide on movement of whole group or at least the movement should be average between fastest and slowest member.
16. I had a bug with invisible enemy Outpost. It only became visible once I conquered it (for 2nd time; I took it and Magnar took it back and then it became invisible.
16a. There was a dragon lair inside ZoC of that outpost. That dragon never went to destroy it lol. He also kept ignoring Magnar troops that were 1 square away from him although he could have killed them. But he was happy to chase my units around lol.
17. When a building finishes and I go to place another one in empty queue I need to be able to quickly see what was the last building/troop I done there. This becomes a problem when I got multiple new cities and makes city management difficult. List of done stuff on right side of screen is not enough or good enough to be only such information.
18. When units finish in a city (I don't have on that units automatically garrison when done), I often have problems with figuring out where they are and then need to look for them and click on them on left screen border list of units. Put a flag or something on units so we can see them easier (this only becomes a problem when cities are bigger and more developed and take more then one small square)
19. When I got a group of units and I want to remove one and move it away often that units does not move away and I cannot even get it to show in the square until I remove then other units it was part of.
20. I still have bad mouse issues when I am trying to CTRL+click units so I can select some and not all.
There are other bugs I ran into but I think this is enough from me for now. Let other beta testers do their part as well 