(My English isn't the best, and I haven't really developed these ideas very well.)

A really good ripperdoc who likes to collect knowledge on everything technology related gets reborn on a hive world as the son of a Noble.

Using his parents' wealth, he studies 40k bionics and technology. He combines the stability of 40k bionics and the strength of cyberpunk cyberware.

(I don't know where to take it from here. if you want to use this, you can, just give me credit for the idea.)