Back in the old forums when the NT gym was still a new idea I had gotten in contact with Slab Bulkhead about adding hyper muscle content, I didn't feel confident trying to peddle it as it's own idea, but it seemed like a logical addition to the gym. He seemed to like the idea, but we didn't get to cooperate on it at all, but I had created a document at the time.
https://docs.google.com/document/d/...8HzMxHtSK-qlcaFt4/edit#heading=h.ptmyabyy8wkv
It's terribly out of date by now, but it's there if anyone wanted to peek at it.
I would love to have more hyper muscle represented in TiTs, even if just for body descriptions for the PC and a handful of NPC's.
Having said that, I do also think that tone and thickness are way too easy to gain, not to much of an achievement if a few turns at the gym and the BBQ turn you into a giant.