The idea of raising or removing the daily review limit has come up many times in discussions about Stack Overflow (which usually has a close vote review queue in the thousands, getting to ~100k in the past). It's one of several suggestions put forward to to try to trim the SO close vote queue.
But I don't think the SE Staff/Devs are too keen to raise the limit. For example, this answer on Meta.se by SE Dev Anna Lear:
We have considered raising the number of reviews available to people, likely scaled with the number of their reviews that resulted in the community-approved action (“leave open” on questions that didn't get closed, etc.). However, we want more people doing fewer reviews a day to spread the work around rather than just overload the already highly engaged reviewers to ensure that nobody burns out and that as many people get involved as possible.
I've seen similar comments scattered around various Meta sites to the same effect.
Given that the review limit didn't move on Stack Overflow for a tens-of-thousands-strong queue, I think it's unlikely they'd do it for Math.se.