1. It should be possible to raze your own outposts.

Not sure why you would want to do this unless cities gobbled the surrounding land. Still no real need to raze them though unless you got your Pioneer back perhaps.

2. Distance between cities should be larger than 7 tiles.

This would be good. Make you use more outposts and you wouldn't end up with cities everywhere in the end game. Would be good if this was a slider or in the XML.

3. When a farm/orchard or such is destroyed then the city's population shouldn't immediately drop to the new maximum. It should slowly start to decline until you rebuild the farm.

I see population as the 'viable population', not the actual population. I actually like the new population mechanic.

4. When two or more cities are close to the same resource it should be possible to designate which city it goes to.

Would be good.

5. Cities should be limited to the 8 tiles surrounding the center, and border expansion should be from the center and out, increasing with each level.
This would still leave 32 building slots (less when near an obstacle) and Brad mentioned that he wanted to lower the number of available building types.

This may be difficult to effect if you have cities against rivers, coasts and mountains.

6. We need much more variety in weapons and armour, both visually and in functionality/stats.

I'm liking the way this has been simplified tbh. WoM was all over the place and its weapon balance was abysmal.

7. It should be possible to see unit stats and equipment in tactical battles (all the stats, not just the basics).

You can see them if you click on the initiative cards down the left hand side. It could be handled better but they are there. The method I use is to mouse over the unit and see which card gets highlighted and then click on the card. Would also be good if mousing over the card somehow highlighted the unit on the field.

8. It should be possible to designate a leader of an army, or army bonuses should be added even when a unit isn't the leader.

I thought bonuses were added to the stack. Haven't checked this though.

9. When accepting a quest that immediately goes to tactical combat, make it possible to see what you will be up against before you accept.
10. It should be possible to see the number of militia (and their stats) when you click on an enemy city.

I don't mind so much not knowing these.

11. When designing a unit, you should not have the choice between making it upgradeable or not. Make all units upgradeable by default. Unless I have misunderstood the system, there is no reason to ever choose non-upgradeable.

If you need a cannon-fodder type unit and only ever want them to have leather armour (which you don't need resources for) then you may want to make sure that unit is always available. If it is allowed to upgrade automatically then it will end up wanting metal etc.