Yeah mods of course, lol
I have two that are close to stock and one Hybrid where I custom built the frame.
I have tried different motors and props.
I have custom cnc prop adapters and use better props than stock.
and of course, more power and longer flights with bigger batteries.
I also got a better transmitter with more switches, programmable, voice response, and diversity antenna.
It's just like everything else if your gonna do it you will get involved, deep!
I have fabricated several mounts for accessories and worked on gimbal designs for the GoPro.
Look what happened to my nice H3 shop!