Simply, as you make your ship bigger, it would be cool if the picture of your ship changed accordingly (I'm heavy frigate, so dont know if the picture does change further in...)

No, it does not change unless you change your race. Lots of people want different pics for their ships but I have heard nothing so far.

It would be cool to have a ship change as you change it in the game. +1
Also it would be cool if you could customize your own ship. Or copy and past from the thousands made online. Maby in time.... the makers of the game will get around to it... but in the mean time we are all thinking the same thing.

Yes this would be very nice +1

Personally, I'd rather see the ship 'take damage'. So as your hull gets depleted your ship looks worn down, starts losing parts and eventually gets disabled.