Our community is 90 % modern and 10 % wild. Please the more important change here would be to reflect that same ratio when it comes to wild and modern frays.
The number one complaint I get from guild members in all guild I have been a part of is "I only want to play modern frays I do not have wild cards."
This is really a very big factor make sure to include this in the brawl update. Not doing so will be a continued disservice to how your community is structured.
As a player who often plays in wild frays with a CL only deck, it's not that much worse. Yes, I get stomped by the rare valanor, but it's pretty rare. And I do sometimes win. I'd recommend you encourage your guild mates to try wild matches and plan for what your opponent might be using.
I play mostly Wild and I feel much comfortable with even though bots are annoying, but it gives you all the cards to play with and not like Modern with limited. BTW, it will be even difficult to play in Modern because of removal of untamed edition for some months as you'll face whales and dolphins having all the Rebellion cards fighting against low level players.