Yeah, it is. I've got the code there for split cards and DFCs, which some parts of the codebase treat as "small landscape cards" and "big landscape cards" respectively. I think this is equivalent to a request for me to add frames for schemes and planes as frame options (and perhaps vanguards while I'm at it). There's actually a lot of graphical fluff around the borders of schemes (e.g. Behold the Power of Destruction) and fiddly curvy lines across planes (e.g. Bant). But if I accept I'm not going to bother with all the fiddly graphical bits, then I could add CSS versions of these easily enough. I probably should provide these as options, yeah, so this is a reasonable request.

This is basically done. There are a couple of little glitches still outstanding, but I wanted to have the almost-complete plane support go live for Challenge # 040.

Fancy!