I agree with mishlai. The trolls do get annoying...
I know for a fact that the transport issue was an experimental addition to the beta. They decided to get it to analyse the area, and if they couldn't see anyone, would go on through. This fails because you can still see them, especially if you have planets behind the ship, its a deliberate human-style error, which has been repaired to make it work better in the newer beta.
I do agree to an extent about poor deployment. I've been in situations where the AI should have finished me off, but due to poor deployment and my superior ships (despite weaker tech). I lost in the end, have not enough diplomacy and trade to hold eveyone off, it turned into an all-on-all melee with me in the middle. I took out half the galaxy's ships first, but had to surrender because they just couldn't put me down.
However, the fact was they realised on quite a few occasions where to be, and ambushed my lucky ranger fleet, wiping out the best part of my army.
Diplomacy is a deliberate issue to highlight the different AI's, and also works against the Yor, who have miniturisation bonuses. (Gameplay lost to an extent, yet it's logical. Evil robots with dalekian attitudes don't make good conversation)
And, the AI trumps over pretty much every AI out there. The things I've seen it do while being a diplomat are quite amazing, including once when I (the Drath) thought I was running the galaxy in a sneaky way, had a group of people declare war on me, and found it the Humans had paid them off to do so.
As for replay value, there was a point where the game got boring for me for a bit, but I experimented different playstyles to be challenging. Try winning diplomatically as the Yor, or militarily as the Iconians. Another fun thing is to be the evil puppet-master of the galaxy, or wait until a precursor device is activated, leave it a game year, then try and kill the race who had it (damn near impossible) The AI has also undergone some revamps (especially Torian) for the finalised 1.1
As for the forums, we apologise if your criticisms weren't delivered as quickly as you may have liked. I myself run in Opera, which still isn't really widely supported, and they work fune. Were it not for the fact that the rest of your points were valid, (to a degree) I would offer you some cheese. To go with your whine.