Earlier X series accessories that work with an X-T3

[Jbreiner]

I would like to hear from X-T3 owners with earlier X-T1,2 or X-E bodies if any of the accessories for those earlier models fit or work  the on X-T3. I am wondering specifically about accessories like the $129 metal "L" grip/bottom bracket for the X-T2 or the $40 RR-90 remote shutter releases, etc. Fuji specs and RR-100 for the new cameras. Please post favorable experience with any older accessories you may discover that can be interchanged. I can confirm that the extra screen protectors I had laying around for the X-T2, X-T20, X-E3 do not cover the entire LCD screen on the X-T3 but the screen protector for an old X70 is almost and exact fit. An aftermarket leather half case I bought (and never used) for an X-T2 to protect the bottom plate seems to fit fine on the X-T3. I don't think you can use the earlier remote shutter release without a USB-C to mini USB adapter which is a kludge.  I will confirm that as soon as I have an opportunity to experiment. Probably will have to buy another "new" remote shutter release. I know Fuji would like to force us to repurchase all that accessory stuff over and over again each time we buy a new camera body. They seem to be taking lessons from Apple but it all adds up.