Thanks for the help, i especially like that txt-techtree, great work!
...and just another question...
it seems that a fleet just can have 1 strategy...but what if my fleet consists of "weaponships" and "troops" and "kamikazeships"?
do i have to create a second fleet with only 2 different type of ships???
You can give specific ship designs their own stratagies in the Design Creation Window. Then, have your ships set to break formation, which is done from the Stratagies tab in the Empire Options Window. Then, your ships will ignore the fleet's strategy and use their own.