The invasion balance is way off, it needs to be the other way around.
so right now:
Super Early Game:
Invasion not possible because of lack of technology and credits to build assault frigates
Invasions with very few thousand soldiers against unprotected planets (no ODS no troop buildings)
Early Game / Midgame:
Invasions against planets with 25% ODS and few thousand soldiers
Midgame / Lategame:
Invasions against planets with 25%/50% ODS and tens of thousands of soldiers
Invasions against planets with 50% ODS and several hundred thousand soldiers aswell as defensive strengh tech
Other than super early game, its getting harder and harder for players that have equal tech and economy to successfully invade. Why is this a problem? New players in early game are much much more likely to leave the game because they lost some useless planet, while players with several hundred hours dont rage quit cause they lost one of their 40 planets. So it needs to be quite a challange to invade in the early game but much much easier in lategame (there were some posts about stagnant endgame recently).
defense strengh tech for troops changed to offensive strengh for troops
new colonies start with 1 military building?