I have after a little time come up with that it still almost sux:/
emplement destroyer from flotilla to single unit and converting TP to many , but the mening of sinking a TP cant be reproduced in game so I still think this solution is worse, TP are slow, and vournable , not to say if enemy know about it, a highly valid target.
If it was possible to emulate loss vs sunken ships ok , but now its all or nothing, than I think the purpose is of the thing is missed out.
First the attack values must be if all ships where at bearing with all weapons, meaning that all ships is visible and can be shot at , therfore not harder to kill for a BC or something ( witch is superior in armour firepower speed and survielance )
well I can go on , but I feel it is a bad workaround of a problem witch inflict more bad than good (even if its somewhat to make up for bad AI)