I just want to make it clear that I have no doubts about the mechanics you explained (and I agree "Skip" will probably not be used), I was just making hypothesis to try to justify the need for it, all of which failed. And I know "it already does", that's why I said "just", to imply that would be enough.
The best answer you gave was:
Honestly, in a game in which you can't even see how many souls you have from the main map, I still think it's totally overkill to create a new unit just to help people sum numbers that won't get higher than 30, and that is only if they don't want to just fight through and "plan" ahead (not much to plan, though). For example:
It's Thursday (War 4 day), I'm on War 1, My Progress says 1 out of 5, so that's 3 + 5 (War 2) + 5 (War 3) + 5 (War 4) = 19.
I really think it's way too easy to calculate to justify adding a whole new energy unit that might end up creating more potential for confusion than actually helping. My point is that it's not necessary at all, simply put (unless we're missing something that hasn't been disclosed).