Last time I used EndeavourOS, I managed to get the graphical installer to install BTRFS on LUKS, it did require custom partitioning in the graphical installer, snapper just worked after that.

Zram (or was it Zswap?) was pretty easy to enable after installatiok

The bootloader might be beyond what the graphical installer can do though… I never really bothered switching…

I gotta ask, what is it you want that the installer doesn’t provide?