Well there you have it - you personally may have valid reasons, but then again, why do you need to play QP at all?
QP is means to consolidate players into one big pool by rewarding their willingness to play whatever with whomever. It is not really useful to view the QP system under any other circumstances like pre-built teams or overskilled players who do not need any rewards at all.
Imagine every host in the QP pool blacklisting Skittergate, Blightreaper and Enchanter’s Lair - then people who actually want or need to play those maps would have to play them without the QP reward. And usually, those people are actually the ones who require all the rewards they can get in this freaking grindfest of a game.
Giving the players tools to skew odds is just that - skewing odds. The amount of OCD the devs have regarding their precious RNG makes me skeptical that this kind of a change is at all plausible.
You seem to touch on a different issue though - one which I was trying to voice since like 2018. Namely, give us means to vote skip maps, to vote for next action after a map is finished (like in VT1), don’t try to work the dice in order to shove those maps we complete less often in our faces. All those are completely valid concerns, but QP blacklisting is a bit of a heavy-handed solution for addressing them in my opinion.