Thanks to the help of people over these forums, and a friend of mine for coming up with the idea, I've tinkered my way into releasing this mod.
What it basicaly does is removes the frigate factory from the game completley, disabling players from building Frigates/Cruisers. Main problem right now is that the research for frigates and cruisers are still ingame, which I do hope to change in later versions, or atleast when I can find the free time.
I've lowered the production costs of each capital to 300 credits, 150 Metal, 100 Crystal. Thus making it easy enough to make a good sized fleet of capitals, which is the point of the mod.
The way to get the 'infinite' capital limit (Set to 5000, anymore would be absurd =P) is to research the first item in the Capital Limit tree. No need to research fleet limit, due to Capitals costing 0.
I'm thinking of removing carriers, due to the obviously abusable carrier fleets that can be made. For now, let's hope that we're all honorable and can agree not to do that (unless agreed apon by all sides in the game).
-Crim