I got a few blown ESCs, so i am going to try a transistor swap on some of these.
I got a lot of schoolwork to do these times, so i cant guarantee for the speed of the progress on the project, but i will have a crack at it, and i keep you guys updated.

A brushed ESC is even sinpler. If it goes both directions (it has reverse) It is likely that its a single phase H bridge.
If it goes only forward, its likely that is has just one single transistor, making it the easiest one of all to upgrade.
And yes, you can swap the transistor(s) here aswell.