It's all about articulation, isn't it? Avoid legato touch in Bach. Have you tried to play legato with heels only? It's a nightmare.
And the toes! The toes can be used for a lot of other things. Instead of thumbing-down, we could have toes-up technique. Sure, you have to develop some flexibility to reach those manuals with your toes, but maybe they could build a second pedalboard? I've heard they had something like that in Germany more than 100 years ago.
"Aristide, perhaps you should consider building a few of the stops down there that we could operate with toes."
"No, I don't need a page turner anymore, I have my toes for that!"