Hey,
This would require a huge effort, be entirely superficial, and it could involve some more story telling, which I understand not everyone is okay with:
How about having an encyclopedia of all the ships (and buildings) in the game? Like an easily accessible journal of all the ships in the game. It would have all the details of the units available from the tooltip, plus a phrase or two of strategies, just to give the newbies an idea, plus that page from the wiki with its efficiency against the certain ships. And maybe like a short backstory of the unit, to give every ship a little more personality?
Or, if you want to add lore to the game, list each ship's size, height, cost to build and date enlisted in the fleet, etc. PLUS, what I'd really really love, would be a zoomed in picture (or animation) of the ship in question. For example the ship's picture would be the same size as a reactor mk III for example, with all the detail that that would bring. And beside the detailed picture you would have the default ship and the icon for comparison.
Now I realize that this is a huge undertaking, but I can see it being an addition that comes with the premium expansion or something similar. It would add enough levels of polish to make the game stand out from all the other RTSs even more than it has already. And then it will have it so we are one step closer to having high res ships/ really really close zoom functionality in the game.
Thanks
Tankor Smash