I don't yet have a line on any notable 26650s we can count on in this way - but I also haven't done much research yet because I haven't yet decided on a 26650 mod I want - until I saw this one. LOL.

I'm fine altering a couple 18650s to rotate in a 26650 mod, though. Especially if it's still efficient with the power at the 50-70 watts I generally stay within anyway. AND I agree that there is now a need for a larger landing strip area for new mods considering the new mess of large diameter RTAs that actually seem to be well worth owning as well. :)