I agree completely with this suggestion. The phone has 2.6GB internal memory, not to mention you have up to, a 32gb sd card you can use for things such as music, apps you can move to the sd card, photo's, etc..etc.., but 2.6gb of internal memory is a phenomenal amount for a phone. I being a HUGE widget user, in which case you cannot move the app to the sd card, because if you do the widget will then no longer work, so considering that, I have yet to even fill a 3rd of my phone memory up. Of coarse I am leery of apps and how they can react so I do quite a bit of research and only install certain apps/widgets and watch the phone closely for a few days if not weeks after installing them, I also do not do Facebook, or anything similar, I'm pretty basic when it comes to that stuff. I do have angry birds, a flight game called Pacific fighters or something, winamp, fruit ninja, Go weather widget, and a few others, those are the biggest memory/space eaters I can recall, and I am only down to 2.4gb still. I move stuff to the sd card when I can, but quite a bit of my stuff, probably 70% - 80% is still on my phone itself.
The only thing I took off my phone was boost zone I think it's called, and one other I can't recall atm, but other than that I leave stuff alone. I use the gmail app for email, and since I can't get rid of the email app, I leave it be.
If the apps bother you to see or look at them, you could always get a home replacement, then in the app drawer do a hide apps list, then hide them from showing. This way it never uninstalls, but you never see them either.
I'm not sure how "freezeing" the apps works exactly, I've seen it in a few programs, but never have tried it. Once frozen do they stay after a reboot or power down and back up? I am assuming that frozen apps are just that, they exist in the os/system, but no longer are functioning in the background or at boot-up. Kinda like a frozen item, you can see it, but it's not functioning or working, even though it's there.
As for Boost Zone I have found no ill affects from removing it. If there is a bad side affect I have no found it or ran into it yet.