I would also like to see the HTC VR keyboard for 2D apps instead of the emulated android touch keyboard appearing over whatever app I am trying to use.
There's this aftermarket gasket, but no worldwide shipping.
https://immersive-display.com/en/accessories/768-silicone-cover-for-htc-vive-flow-and-xr-elite-glasses.html
I really wish I could run multiple apps at the same time, that ability would make the headset so much more useful as a standalone device. It's pretty high on my features wishlist.