Dropper I have as well. Good luck getting the actuator back and working well on if its a non-end cable actuator on the trail though. That's a PITA in a shop.
Shifter I find far more common in Shimano brifters with internal cable routing. I've never seen it in MTB but you seem to stress test your parts more than most.
yea my dropper is a fixed end on the dropper, so easy enough to change as long as i can fish the housing out with the post, worst part will be riding with the loop of extra cable handing off the bars.