B0rsuk,
Resources were *not* doubled, they are exactly as the same levels than Dom2 (you start at base 80, and I didn't notice on maps that the average resource was increased).
Gold was more than doubled (x2.5), but so were buildings costs !
So to recruit mages you now have to invest 1000+ gold vs 400 before, and eventually you don't get much more mages until mid-game, as the recruit speed is limited by number of available castles+labs.
Alchemy wasn't halved, where did you see that ? Fire gems still at 15 and Earth at 10.
Even then I agree that Alchemy is rather less interesting now that gold is more plentiful, even if unit costs remained the same.
For example I don't think the old "Alchemist" strategy will be efficient, as the extra alchemy income will be weak compared to standard income now...
Undead leadership has been upped - at least when I browsed Ermor AE commanders they all had more than before.
I don't think normal leadership should be increased, leadership limitations at least this gives a reason to recruit non-mages commanders...
Supply sites could be doubled, but now supply is not much of a problem anymore so they end up rather useless anyway...
Maybe it is with 1000+ armies late in a game, but 1000+ armies still are not a good idea (one FftS, -500 units, bleh
!)