Every aspect of the game, not talking about this big magical complaint, is great and is a true rival to MoM, I played MoM enough and still play it too. MoM has still a couple features that FE won't have but FE has a lot of strenght that you don't see in MoM.
Can you name me 3? One is graphics, obviously (2010/11 game vs. a 1995 game); can you name me 2 more?
Army Customization, you don't see that in MoM, which is really great.
The world, the quests, the monsters, the graphics + general feeling (FE will have more charisma than MoM)
(I could even add the Zoom option I really like)
The different environments
The dynasties (wife, child, ...)
Maybe mounts (there I don't really know what FE plans for the mounts but WoM was okay I guess with Mounts)
Your sovereign is physically present and can act in fights, move, etc.
Customization of the sovereign won't stop at how many books of one school you posess and a couple perk/flaws
Customization of the city that you can do by yourself (those who played MoM will know what I mean, I think almost everybody here, lol)
The Tech Tree while in MoM Magic is the only research.
Indeed for fun, it really made me laugh, like Louist said it doesn't require DosBox ! LOOOL !!! (hi Louist, long time no see by the way)
+ I would say the economical system which looks like it will be more developped
As well as the diplomatic system !
I think the IA will be more developped too which will be a big + because everybody how dumb the IA is in MoM and how easy it is.
I even want to say the battle system which will be better, based on more attributes than MoM where it stays pretty simple even if MoM has still an advantage with the City Battle System we won't see here.
Now Artefact creation (might still come?), Spells (main goal of the game after all), City Battle (might still come?) and Races (FE's lore is set, we won't see our klackons, Trolls, Elves, ...) and finally flying units or Water Units (We might still get stuff like that) will be the down point of FE compared to MoM.
There, you see ? There's a lot in FE that will be greater than MoM I think but right now with how the spells are, it's a bit dull
I haven't been thinking that much but I'm sure if I think more, I can find more good points for FE =D
I'd really like to see Air and Sea units, don't tell me that FE's Lore won't have any Air / Sea creatures with all those demons and uuuh "stuff" (lol) it already has ? Any summon giant shark / octopus or giant Sharktopus or Octoshark (yes, little reference those movies for those who saw them ! LOL)