Hey @PearsizedOverload! It seems like a lot was added a lot of stuff since then!
I would be planing to do a run of your system in it’s infancy using a campaign i made a little while ago.
That or plan something entirely new for a group of friends.
even If the talent tree is not completed it’s alright, has i can either improvise themed talents or replace these with boost to skills/stats.
to summerize the campaign: an alternate universe in which one’s size determine his status, a group of low weight adventurer stuble upon an ancient food reserve, but it’s security system is still active (somewhat).Their goal is to hopefully aquire the bulk to better fit a greater status
Assuming i haven’t just lost all my notes, the campaign was about 5-7 session long.
It is a lot more steam-punk in nature, so species and starting weight/hight might be modified if we wish to be closer to my original idea.
This could become a module for people wanting to try your system if it fits well enough 
Have a great day!