Both of these tools are a grinders best friend, and were relevant to why I gave the service a solid recommendation to begin with
The franchise as a whole is at an insanely popular level now, which although I think will probably also cooldown at some point, that even if a mass exodus of newer collectors/investors happens we will most likely still have a larger demand pool than previous post hype phases
While at this time it would be exes, in the future, this would be whatever the generational gimmick is, e.g.: Lv.X, EX, GX, V, ex (SV) Discontinued/Revised Rarities note: just because there is something here now, doesn't mean it wont come back in the future
If Planechase is a regular part of your Commander experience, then by all means, keep them in the deck