it sounds fascinating. I'd rather have all available from the start, as others would too, being seasoned chess players. The popularity of Gothic and Janus has made "combo" pieces a distinct part of the chess vernacular, so people are more familiar with them.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)