Viktor, I have to agree with
@Pearl484. It would be a shame (and a great loss to the community) if you burn out due to overwork. This is supposed to be something that mitigates the stress of work, not something that aggravates it. So release your labor of love at your leisure.
With regards to release style preferences, how about releasing them in batches similar to what you've already been doing? You'll gain the benefit of feedback while at the same time you won't feel you're under any artificial obligation to release half-finished work.
If you're planning to make your own thread for your original creations, may I suggest taking pointers from the opening post of this thread? So many MV resource threads have missing (or completely non-existent) image links that it's a small wonder how Maig's OP still managed to have complete image links after all these years. It would be a shame if your work were to be lost to posterity.
As for what you should make, I think your idea of making something "missing" is brilliant. Think about those cloak ponchos and backflag accessories. Those are entirely new accessory categories you made on your own. To paraphrase the thread "What the RTP is missing" ask yourself "What is the MV generator missing?"
About your willingness to take requests, you may want to define the scope of possible requests. How about defining what sort of artwork you enjoy making so the requests will revolve around those? If you're asked to make something you don't enjoy making, you may still complete them out of a sense of propriety but it will be no fun for you.