OTOH, the tags for groupings of pieces feels like a kludge that offers very little value if the other approach is available...
This depends on what kind of search utility we can provide (elegantly), and how much convenience we think this class of games deserves. The current definition of the tag would need a search like "includes at least one of marshall/archbishop/amazon and no pieces outside of FIDE+those".
I think in part this class deserves a quickly found list because it's so common to want to include the compounds; it may help new developers understand the prior art in this area.
This depends on what kind of search utility we can provide (elegantly), and how much convenience we think this class of games deserves. The current definition of the tag would need a search like "includes at least one of marshall/archbishop/amazon and no pieces outside of FIDE+those".
I think in part this class deserves a quickly found list because it's so common to want to include the compounds; it may help new developers understand the prior art in this area.