Luotuoqi is intended to be playable with an ordinary board and pieces. I
don't see a big deal with entries that differentiate one
rook/knight/bishop from the other. It will be up to the polling to see if
others have issues.
A similar situation applies with rules like proposal 3, The Cube. It
introduces something other than the basic 32 pieces and a board. Only the
voting will tell if this places the rule beyond the pale.