Summarized (reposted) from https://www.chess.com/clubs/forum/view/proposed-change-in-ratings-and-leaderboards-1, as I believe that here is the proper place for me to post server suggestions. The explanation for this proposal is given in the link above.
Suggestion: Players that have a variant rating with a Glicko RD above a certain threshold (like, 100) will have the rating marked with a (?) and be excluded from the corresponding variant's leaderboards.
Suggestion: Jump spell should work with Maos/Xiangqi horses, like in the following game:
https://www.chess.com/variants/custom/game/54966664
And the dragon bishop. The fact that a Xiangqi horse can't use the jump spell to jump over an obstacle feels targeted.