I knew there was one more request:
5. Make a few more default ships, in particular, for the early game. Once you have Ion technology, you should get double-Ion Colony ships and Ion Freighters (with Trade). With Survey, you should get an easy survey scout. Not only would this be handy, it would help make the AI better, since the AI would be more likely to use the tactics we use...
The ability to make custom ships is there for a reason. Use it frequently. If anything, there needs to be fewer default ships, not more. All of the armed ships could be deleted and very few people would notice, let alone care.
The AI makes its own custom ships to match what it thinks it needs, so if it percieved a need for such ships, it would make them whether they were default ships or not.
If you really want ships like this, and play the same race repeatedly, just make sure you check the option to save ships to hard drive. That way the ships you design this game will be available next game as soon as you get all the tech necessary.