/diy/ - Do It Yourself

I've got a Prusa mk2 dolly printer and I'm thinking of upgrading parts to make it more reliable.
I printed mk3s extruder, got bondtech cloned gears and genuine e3d nozzles with trianglelab heatblock which is a copy of current e3d v6 (using cylinder sensor instead of glass one).
The frame is made of aluminium which I cut locally so the frame is sturdy for a mk2 model.
I've also got prepared a skr 1.3 with tmc2130 to migrate from regular ramps board.
Do you have any suggestions as to what to upgrade except that?
I've been thinking of maybe going for 12volt prusa bed since I did get a pinda for the extruder and maybe changing the z axis motors from coupler+rod ones to ones with leadscrews already in them.
The problems I did have were mostly with extruder jams/leaks which I attribute to bad e3d clones or the mk2 design which I hope will fix the problem. I've already spent around 280 euros on the current printer, to upgrade bed/motors would be around 100 euros more if not going for genuine prusa parts (i'd go for EU "copies" instead of china copies this time).