Drift,
Thanks for MOM!!
I've been modifying the rules as i've been playing - think i've played about 10 games so far now on emperor. Since you asked for suggestions... and i've kept a change list...
BTW, I like the lighter terrian a lot.
Here is the list
Trolls can't fly (via birds).
As a consequence of this, spells can ride on ships.
Dark elves have ZOC and defensive bombard at half thier Attack Str (rounded down).
Wolf Packs now have a defensive bombard of 1
Conscripts now have 3 hit points (affects 2 dead and all goblin units)
Jaguares and wolf packs hp have been adusted so they still have 2, but barbarian sea units now have 3 hitpoints.
Costs of non standard units where looked at. some minor adjustments made.
Men 3rd through 5 units cheaper (by 5, 10, 15).
Dark elf 5 & 6 Cheaper (by 5, 20)
Dwarf 5 & 6 Cheaper (by 5, 10)
Elves 5 & 6 Cheaper (by 5, 10)
Lizards 2 & 3 more expensive (by 5 each)
Troll 5 & 6 more expenisve (by 10 each)
Costs of all standard units where looked at, the following change was made.
The Choas 4.2.1 unit now costs 35 instead of 30
Frea (best AI tribe) is now seafaring instead of scientific
Morja (worst AI tribe) is now industrious instead of expanistic.
Thats all i've changed so far in my personal version of MOM

The biggest thing that I've been considering is making the special race techs neccesarry for advancment to iethor the next race tech or neccesary for erra advancment - so that I will be forced to aquire them as well, and AI's will have a reason to be aquiring them themselves. Right now its a built in advantage for me.