I've spoken with Missouri's deer specialist and this is a topic of conversation, but as you said, it is not likely to move unless the herd balance changes. Currently, the age structure continues to move upward in non-CWD counties. Button buck harvest continues to decline--it is now 8.3% compared to 10.2% during the 2018-19 season. Doe harvest is now 44%, up from 42% in 2018-19.
I'd like to see a late August, early September "one weekend" velvet season (archery), but that is also unlikely, although it too has been discussed. The early and late antler less seasons are being used to help manage numbers, and those counties will not be announced until later in the season, along with any changes in CWD county.