Well, it could be anything. So instead of guessing, I will write here my wish list and if it happens to be anything of the listed, I will be very happy

So here it goes:
- Better hardware support for the new graphic, sound, network cards.
- New hardware support, for example ARM (raspberry pi or similar would be great!)
- Better USB support
- Better software support - browsers working (newest opera, for ex.), torrent software, KiCAD working (it used to work improperly, now it just bsods)
- Multicore CPU support
- New MM rewrite (aka better stability of the kernel)
- Theming implemented, maybe even explorer_new
I may have missed something, but I pretty much covered everything there may be to implement in ReactOS. Of course, I know some of these wishes are too optimistic, but one can dream
If any of the previous gets implemented, it would be wonderful. Ideally, if all of this gets implemented one day, I would immediately switch to it as my secondary, or even primary PC and I would convince others to do so as well.
EDIT:
And I forgot:
What ever it is - Thank you, Amine!