I can't argue with the wait and see approach. I've had to do a couple small fixes on mine, but looking at some people's issues I think I got off pretty easy. I have seen signs that give me hope they've addressed the issues though.
The bumper issue being so common is easy to explain, and looking at the new controller it may have been addressed. The bumpers use the same mold as on the base controller, only they coated it in silver. To do so they had to use the proper plastic for the process which is a white plastic that is not as flexible as the regular plastic used for that part. The coating process further weakens the material which resulted in the bumper parts failing as their entire function is to flex when pressed, then spring back into position. The new controller looks to have ditched the anodized silver for a darker silver. My hope is that it is either a metallic substrate that won't face those same issues, or they employ a newer high-wear paint process which would allow them to use the standard plastic. I'd prefer they were zero-wear metal parts like the D-pad and paddles, but I won't get my hopes up. The OG Xbone controller had a far superior bumper design with a proper hinge, but people complained that they were hard to press so we got the current design.
The stick becoming loose looks to have been fixed in the V2 from what I've seen. The metal cap in the V1 wore down the plastic post. Metal/plastic contact will always result in the weaker material wearing down. The post in the V2 is now a metal tube with a set screw inside that moves up and down as you turn it, compressing the centering spring. What remains to be seen is if this new mechanism is still prone to drift like the V1.