If you're planning any more updates to Sins here's a request for some minor UI tweaks
1) Empire Tree key binding: <Home> & <End> keys select your homeworld and the most recently colonized planet respectively.
2) Stats window->Empire: separate out diplomatic research done from civilian
3) Stats window->Fleet: include "Frigates - Envoy"
4) Stats window->Fleet & Capital Ships: include class-name (eg , alongside, role-name). Would make identifying support ships easier - I can never remember which ships the Utility A/B/C roles actually are . Eg:-
Frigates - Heavy: Kodiak/Destra Crusader/Skarovas Enforcer
Capital Ship - Carrier: Sova/Halcyon/Skirantra