Anyway, I had some thoughts when reading about the final of Rebels and possible connections to Clone Wars:
- it would have been cool, to see two or even three "Sith" battle against each other (like was done in the Clone Wars), giving this idea more weight:
-- we have the character of "Maul", who acts as "General" for Sidious/Dooku, in Episode 1 he is wounded, but not killed, in E2 he is then presumed dead, only to reappear in E3 as "Grievous" (or "Vader")
in parallel to this, Anakin has similar trials, and loses arm/legs along the way to the final confrontation - ending with his duel against "Maul" (aka "Grievous")
So where does that leave Obi-Wan? maybe he didn't duel him then (resulting the lava beach and later breath-suit), maybe OB1 just faced "Vader" and held him off, to help someone (Padme or Bail Organa) escape to safety (or hiding) ...
I was thinking something more like:
-he was wounded in TPM and not seen in AOTC
-he comes back in ROTS and obi-wan is sent to kill him, meanwhile anakin starts to do stuff for palpatine and is sent to go assassinate count dooku
-anakin and obi-wan both come back from their missions, anakin (shows up first) finds mace killing palpatine and obi-wan finds coruscant all destroyed (a bit later) and goes to see padme
What I think is interesting is that when Maul gets his (sort of?) human pair of legs back, they look a LOT like grievous' but black. Anyone see the similarity?