That won't happen and it's also not really necessary. Here's why:
1. Bands are mostly rejected for two things. Either they're considered not metal (enough) by this site or they lack a physical release (or at least proper evidence for it). If the latter happens, they are simply rejected. Now, if you were to submit that previously rejected band yourself, what difference would it make if you knew about the rejections and the reason for it? You know the rules, after all, and won't submit without the necessary proof.
People who don't are hardly the ones who would go and check a rejected bands list first. Not that we're willing to cater to their stupidity/laziness anyway. Such a list you mention would hardly improve the current happenings in that case. Granted, you might be able to take some info from the old carrion submission, but that's not really our concern. A minimum of effort is expected and should be no real problem.
2. If a band is rejected for not being metal, it is also blacklisted after the fact. If you try submitting it you will be informed about that and (if the country is identical to the blacklisted entry) you won't be able to create a draft, let alone submit it to the queue. That is pretty much all you need to know in this case. It was judged before and found lacking in metalness. If you strongly disagree or think they have new material needing reevaluation, then that's where the rejections thread in this subforum comes in.
3. Users can already access the band queue to some extent and give their input on pending bands via reports. You might be able to provide missing evidence that way. It happens all the time.
4. Staffers have a list of deleted and rejected bands accessible (within a certain time frame) and can always check it for some important piece of info, if absolutely needed.
5. Sure, there are cases where some dumbass simply resubmits an empty draft or an otherwise not-metalness-related insufficient submission and we may have no other choice but to blacklist it. But in that case you will again be notified and can then inquire here.
6. Having such a list made public would be similar to advertising the blacklist. Much whining would ensue.
7. If unsure you can also search this forum for a previous mention/discussion if the band in question.
be some small benefit coming from users systematically perusing such a list and trying to hunt down the missing info, but I very much doubt it would be worth the effort compared to the status quo. Also, imagine the chaos created by the inevitable rise in duplicate submissions. Let's say a user comes across proof for a physical release for one rejected submissions, submits himself and the other, original guy later resubmits too with the same proof included. Etc. etc. etc. No, the system is rather fine as it is now.
I think just because the band is not metal in the least bit shouldn't make the band not approved as a metal band.
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