Morph is a really unique and interesting antagonist that never really sees play, and when it inevitably does it dies really quickly.
Not only is it really slow and unable to move around at all, the morphed objects are super easy to spot if they need to manuever to leave at all, since the slow pace is also attached to the objects.
The goal of reproduction requires a LOT of consumption, which makes it really hard for another morph to even come into creation.
I feel, as someone without any balancing experience in SS13 so take care, that a 'lurching' movement might be more fitting for them? So they can only move so fast, but the movement is quick. Which would make it hopefully harder to notice them?
Something really cool I see on some other servers is morphs being able to absorb and eat items, could it not be a possibility that items give very small amounts of 'points', organics give a lot, and then increase the reproduction cost a lot so it evens out a bit with the new possiblity of gaining resources?