I think the concept of stuffing additional tadpoles into your brain is incredibly immersion breaking. I imagine most players will only reluctantly engage with the seemingly ridiculous premise. The original concept of tadpole power increase with use was a way more compelling system.
I will also add that it just seems unnecessary to have a “highlander” power boost for “lone wolves” that kill off companions. However, if you wanted to keep it, it seems like it would be better to have your OG tadpole develop the ability to “psionically” absorb the powers of other tadpoles that have lost their host, without stuffing those tadpoles into your head.
