I though about introducing a new ship that had ability to suck planets like the evacuator and so some planet damage, just not as extreme. but I realised that it could be incorporated into the karastra destructor just as well (even though their model does not suggest particular capabilities for storage).

so, in short, an alternate mode for those vasari siege ships, by which they would do less damage than usual, but sucks some degree of resources off, which lowers the enemy's rate and benefits yours for a while.

I got this idea, because I kind of thought something like this must be essential for vasari and only having it on capital ships, only on one and only at a fairly high level, seemed a bit odd. sure, they had techs to recycle debris and scuttle and some other tid bids, but this could be strategically interesting ( a nice ressource raid on an ill guarded planet or when defenses have been weakened as opposed to the trouble of taking and keeping) and convincing from a lore perspective.