Heya, I just wanted to chime in here and give my two cents. I know that the Home feature being removed is disappointing for a lot of our PCVR users, but I hope it doesn't completely turn you away from us!
Currently, there isn't any sort of program for credits or trade in to get a new device, and I honestly wouldn't expect to see one in the future. However, if that's something you'd be interested in, I'd recommend posting on the Ideas board. That's the best way to get any sort of ideas and suggestions seen by the right people!
Also, in regard to the games you've already bought with Oculus, you'll still have access to all of your PCVR games on any device you connect to PCVR with! So for example, if you decide to get the Quest 3 when it comes out, you can connect to your PC with Air Link or a Link cable to play all the same PCVR games. A good amount of our games are also what we call "cross-buy", meaning that if you own the PC version you will also own the standalone version if you use the same account on a standalone headset. You can check out a list of cross-buy games here.
I hope I provided some answers and clarification for you! Please don't hesitate to let me know if you need any further explanation or anything. I'll do my best to answer as much as I can!