While my first inclination is to say root that b!
My second is to agree with former advice and say try out all the items on the phone first before you root. So you have a hassle free return. IE use maps more than once, use BT, watch a vid or 2 load up some tunes, text, e-mail etc etc.
Then after say 2 weeks: Root that, get TI back up, and freeze the bloat ware from running on the phone. This will increase the performance surprisingly.
Once you are happy with that simple fix, loot into ROMS, themes, and the other deeper mods, don't forget to back up with Fabs Bootstrapper and Rom manager. Then Rom and look into overclockings and undervolting.