A few issues:

[TheWordWillSetYouFree]

Firstly the electric shuttles are very overpowered. They are able to destroy a fleet in a few seconds and no amount of defenses can halt them, as they inflict the same damage to all units in range. They need a significant decrease in damage against certain ships, so that they are still effective against fleets on the whole but can't be used to instantly negate a vast incoming fleet.

Secondly, the starfleet commander can get so overpowered that there is no way of attacking a certain planet. This is a prime example:

If we even attacked that planet the resulting flood of starships would crush all of our combined ships and turrets. A nuke isn't practical either, so I don't see the point of this AI type.  

Thirdly, the beam starship is like a tank. I don't think dreadnoughts have a bonus against them, they just cripple their engines. So that needs some attention.

[Lancefighter]

Er yousee; That is the same problem as any given planet you leave for hours to grow.
Well, youve got some choices I suppose - Warheads might work (the lightning kind), or dreadnaughts should work.. youve got 4 members there, thats 20 mk1 dreads... a little bit of micro might help. Of course, forcefields are also aweosme - No starship can take them down as of the current prereleases.

[I-KP]

Not always practical, Lance.  Once you reach a certain point in the game (a point which you will reach) the starships reinforce at a rate faster than you can kill them, even if you dedicate your full allotment of heavy metal into just that one system.

[Spikey00]

Tricky one--I am assuming extreme fighter spam isn't an option here.

Err...  I'm out of ideas!  It's a troublesome one because this is supposedly what the AI personality technically should be doing, but this is probably overkill.

[Lancefighter]

I will definitely say that I've never gotten quite that far...

(my current game I did a snake map of 60 planets.. I'm beginning to regret that. Nothing like fighting across every single planet..) but its rather nice, as only one planet is usually alerted.

Of note - Some starships are vulnerable to shredders. Raid starships I know, and possibly leech as well..

[Spikey00]

From old knowledge; I thought most were immune?  At least from my memory I can say light starships were the only starships that could be attacked by melee.

[Lancefighter]

Definately raid starships are meleable.

And tractor beam able.. >.> or maybe those were leechs

[orzelek]

Raid ones are for sure tractor immune.

As for force fields - I'm nto sure if they would work well with that amount of starships... this will be a simple case of overwhelming fire or ignorance for these (raid ones).

[Lancefighter]

Two forcefields would be virtually immune to starships.. With micro. Really.

[Black]

If you have your forces underneath forcefields that are also 4x attack boosted, the penalty and bonus should cancel out letting you destroy things at your leisure.

[RCIX]

I have two words for you guys: Viral Shredder.