4 things:
1) On main screen, when population becomes greater than 999B, it becomes 0.001XXXX T, rather than 1.XXXX T
2) When that happens, generation influence/turn skyrockets. have 100+ colonies, each 100+IP, but empire IP will rise by >400,000 per turn
3) when colonies autobuild to rally points, troop carriers leave with 1000soldiers max, regardless of #modules/ship
4) When creating fleets, movement points reset to ship with highest movement pts remaining, upon disbanding fleet, all ships are restored to full movement. i.e.) if ships >20pc movement/turn stationed every 20 pc, can move a ship from 1 side of map to other by creating fleet & disbanding ships. like connecting the dots, at each dot create fleet, then disband to 'recharge' movement.