The answer to 3) above is no, btw, Hansebenger. Once you lose the Minor trait, you can gain no more traits.
Now, a few suggestions of my own.
I would like to see xp for heroes lowered. Not the cap, just the rate. Tied into game speed, but generally halved. As it stands now, I can take out 4-5 civilizations just using good ole' Lucian if I'm careful.
I'd also like to see xp from barbarians lowered once the received unit has over 100 xp. I know it's already reduced, but I think it needs to be reduced more. For both these suggestions, adopting the fractional xp system from FF might be helpful.
I'd like to see the Orbis mapscripts tweaked to start everyone on a significant river, given how important rivers are in Orbis.
I'd like to see an Elephant managerie building option 8). I'd also like to see the Grand Managerie changed to any 5 animal buildings as a prerequisite. Reintroduction of jaguars and panthers would be nice too. Jaguar warriors 8). Hehe.
I'd like to see ranged damage lowered a bit. Not the ranged combat strengths per se, the actual impact of ranged attacks, particularly at the high end needs to be flattened. Also, XP for ranged damage needs tweaking. In particular, ranged units which cause collateral damage should not get to collect xp for 5 fights at a time (or however many units they hit).
Barbarians need to heal less quickly. I had a 14 strength Half-Ogre Chieftain show up one game and he healed about 4 strength a round. Was game breaking. Generally speaking, with things like early game giants and what not running around, barbs need to heal less quickly, particularly in a player's territory. If Orthus is the concern (and he seems tough enough in the games we play on Epic speed), give Orthus a heal promotion. Base barb heal rate needs to be lowered, IMO.
Some new features I'd like to see as well--Arn't there always? But these above represent mostly tweaks that I think would make the mod even more fun to play 8).