Well, I doubt we will have any sort of decent AI by the end of this decade and years to come. And remember that AI, well all AI are generally.... stupid 
, because they are man-made, scripted and what not. Basically, there are a few things to know about SoaSE AIs:
1. They pretty much try to avoid conflict unless forced upon (e.g. they evade epic space battles)
2. Love attacking undefended colonies
3. They respect numbers (e.g. You could have 5 kodiak cruisers attacking an AI with 12 disciples. Ai will attack, ultimately losing the battle)
-LOL @ AI running because of base defences with his 4 cap ships. 
4. They have a goal, one goal, to eliminate competition (meaning you) They will pretty much team up on you if they have to, especially in a ffa. I mean, it is their scripting.
5. Don't play with AI unless you don't have a choice. Play multiplayer games with REAL ppl, it allows more freewill and strategy. AI just follow a specific script (e.g. they will most indefinately never rush and just do the standard every game strategy they always use- colonize and defend allllllll game)
Also, if you remember Blizzard RTSs those bots, to a newbie, can be ridiculously hard
But TBH, I think thats ALL you have to consider about SoaSE's AI. I definately need to try the 1v9 AI game =P.
