Chaos Wastes has a lot of potential, as demonstrated by the fact that the game has the largest active playerbase since launch, and overall, despite issues that are well discussed by other members of the community, is in a much better place than the Weaves game-mode.
Priority should go towards bug fixes, polishing, and balancing boons, but something I feel would go an extremely long way is integrating the maps, music, and gameplay modifiers of the Weave game-mode into the Chaos Wastes.
As it stands, Weaves have incredible music, stunning visual modifiers, and some really novel gameplay modifiers associated with the Winds of Magic, trapped in a game-mode no one can play due to terrible matchmaking.
It is made incredibly unfun with “challenges” that reward cheesy tactics and exhausting grinding instead of engaging skill and teamwork, has no worthwhile rewards or incentives, and includes a pointless time limited “seasonal” system locking off content arbitrarily.
I think integrating the various Winds of Magic as map modifiers into the new mode similar to the Chaos Gods, reintegrating the gorgeous visual level tweaks for variety, adding in the excellent music for each Magic already present in the game files, and utilizing the already designed maps for chained together randomized illusion based maps (like the one already present in Chaos Wastes) would be an excellent way to use current game assets in an efficient way, that justifies the work put into the content.