I haven't really done much with it, just learning the ropes on IPT. I have full screen (no soft keys at the bottom) using second today in combination with nuenobar 2. I am also using 29007 Cookie from the initial recommendation but I think I want to try the enegry titanium rom as I've been having some hang/freeze up and other weird issues.
I have tweaked my opera to use more connections, not sure that I noticed a difference. What version of opera are you guys using? The one that come stock with Energy roms, or different?
I've also been using winmospeed and I haven't really noticed it changing anything. I don't use my phone a whole lot, mostly just SMS (where I have the most hanging), google maps, the phone and the occasional opera web browsing.
I've found the best way to get icons for IPT is to use Opera on your phone to google image search for png icons of whatever you're looking for, that way you know it'll look decent on the phone before you mess around with downloading it and using it.
How often are you guys restarting your phones? I never restart mine unless it's unresponsive. Maybe I should restart more regularly?