Is there anything Mighty's ROM doesn't do over a Stock Sprint ROM

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I appreciate Mighty not going to cutting edge with Sense UI for stability reasons.

My Stock ROM is running pretty good and as long as I don't lose anything I might give Mighty's ROM a go. I wouldn't mind a little bit of eye candy. Stock ROM is quite functional but sure is a bit boring looking.

I want perfect GPS (which I have now) I never have to do anything and it always locks fast.
I want a perfect phone (Which I have now). I assume this is 99% radio. But I don't want any Slide to Unlock or Phone app glitches.
I want autorotate on everything I can get it on.
I want good battery, I can go 2 days easy now.
I must be able to run exchange.
I never run out of memory or even close. Seen many posts regarding this (on who knows whos ROM).
I'm running Opera 10 Beta and it's working pretty good. Be nice if Might ROM had Opera 10 or no Browser so that I don't have an dead 9.5 or 97 that goes unused and flashed on.

My biggest complaints are TouchFlow EMail really stinks. It's such a PITA to see what messages are unread. Does Mighty's ROM improve this?

And the Voice Command lag over BlueTooth. I don't expect that to be fixed.

I've seen so many folks say they went back to stock, mainly for speed. I certainly wouldn't want it to run any slower/less snappy than Stock 6.1 ROM.

Thanks for any tips.