We all know you're a SenseUI fan of many sorts but there's no need to migrate AOSP users into the same camp as actual fanboys of brands just because it's cool.
A lot of people choose AOSP because they like the simplicity and minimalist approach of it and can then customise/build on it with exactly what they want instead of what comes with Sense with no option to remove stuff they won't be using.
It's nothing to do with being a fanboy, it's just common sense. The Desire is hardly slow, I personally would have sold mine if that were the case as I came from a buttery smooth iPhone and find the stock HTC firmware just as good.
So there's no need to go mimimalist, the HTC Sense experience is just better than anything that's come from the Open Source project. The email client is the perfect example of that, the only thing that comes close to HTC's email client is Touchdown which costs a lot of money and still doesn't work as well and is ugly as sin.
How the hell anyone could consider swyping from home screen more quickly by 0.01 second more important than a proper email client, is beyond me.
All the Desire Gingerbread builds are still missing features that have been in Froyo with Sense, i.e. camera features, 720p recording. If flashing half working software that's prone to boot looping (until Oxygen 2.02) is your thing over having a fully working mobile, then of course that's your choice.
This is the HTC Desire thread and that's my opinion and an opinion in reply to someone has experienced just how crap the stock Android email client is for themselves.