Yeah sounds like no need then, if this offers no improvement for your uses. ANd the above setup has it's own advantages. You'd lose its bigger & clipless but so nice combat body/ring, and your more intense spot going to this. No way would I get rid of that for this or anything, only complement if useful.
The different stuff it does, would be for those who want its wider beam and/or increased output, e-series body size head and tail, twist/momentary-only tailcap (assume you already have the c-version of this tailcap on yours), the new heavy duty clip, and most appealing to me is its new (to SF) tighten-for-high loosen-for-low UI, which is the entire reason I'm getting it. The only UI where I'd even prefer to have more than one mode.
My only question is, since they're taking preorders, do we know it's happening? Like SF is making them? Because I don't think it's unprecedented in years past where sf preorders were taken and then it still didn't happen... are they charging our cards now, or not until they ship? That would give me a better idea. I doubt they'd charge us if they weren't 100% certain it's happening.