Was thinking about making the protagonist to grow really slow, take a lot of efforts to build things; to build an entire Exoskeleton from scratch could take months (many small components, and maybe need to think of new way to create the components to make it work)

The Protagonist won't be able to just build everything, first will have to deal with : 1 : Mental Trauma (Orphan, abuse Childhood) 2 : New/Unknown Environment (is from Earth Aleph, was nearby when Ziz open the Portal at 09 Madison) 3 : Social communication problem (misread Signal, and can be quite oblivious on how other feels the things MC did/said) 4 : Materials & Money (Being Tinker is like Burning Money~) 5 : MC will at first be running with the Travelers for a while so there is also complication (Noelle/Trickster/Cody, always on the move) 6 : handicap (only have one hand, one Eye)

intuitive aptitude only work on other Technology, not powers, Also the Tinker headache it create is no Joke. The Thinker ability is more like understand how technology work in general, so the MC can also build mundane Tech, counter other Tinker Tech, and think of new way to build the Tinker Tech (more knowledgeable the MC is, better the Tinker Tech can be Build/Counter.)

The Tech is not the focus of the Story, But more in the background, like Icing on the cake, it is important only because It determined the Action Protagonist will take, Decisions The Protagonist will Make.

The Story is more about MC Struggle to overcome the Problem in life and Learn how to Let Go/Make Friends.