Mercurial Maculator and thoughts

Hello all,
I just finished a session of siege with the Bois

Quick question , the Maculator has a size of 4 squares. How does it behave around 1 square long passages and hallways?

Secondly the art spells add a nice flavor and mechanics to the game albeit sacrificing a tech specialist.

We were thinking that many corporations feel too similar and miss a factor of difference, even some corps have a specialisation twice (Mishima melee) and we were thinking if there was a way to differentiate between all of them in a way similar to the brotherhood.

Ex Mishima having ki powers, Cybertronic some corporation specific implants etc.

Thoughts?