Looking for Geeetech i3 Pro B component upgrade ideas

[makauchan]

So I’m having a whale of a time with my new i3 Pro B, getting some great prints. Upgrades I’ve done so far...

Layer cooling blower fan

3D Touch (not BLTouch, but seems to work great)

Anti wobble Z bracket and attachment. Can’t say I noticed any wobble issues, but better safe than sorry

Came with T8 Leads 192.168.0.1 router login 192.168.l.l

Marlin v2.x Bugfix firmware

Anyone have suggestions for other upgrades - printed or purchased? Any “must-have” upgrades people have done that I’ve missed?

Hot end? Main board? PSU? I’m a tinkerer so now I’ve got it working I just want to improve and expand it! Much more fun than just buying a new “better” machine.