I'm actually hoping RB3 is the last iteration for a while. At least for 2-3 years. I haven't tried the online since I'm not a big fan of playing with random people, but hopefully the limitations you mentioned could be patched in the near future. I really don't see the why they couldn't just release updates.
And with the music game genre going down, I actually doubt we'll see RB4 ever. Let's face it, only enthusiasts play the game now. It happens to most of my friends. Some are hardcores enthusiasts that play all the time, the rest quit because they struggled and got bored. There's none in the middle.
[quote name='mywhitenoise']Honestly, RB2 is the better game.
I bought RB3 for the new songs, and Pro Modes...but the current Mustang guitar is hard as hell to use (doesn't use real strings, so you can't tell where your fingers are placed). The online component was pretty much killed, you can no longer see custom art work, and you're randomly paired with people, rather than having the option of joining a, or having someone join your, band. I have the Pro Keys, they're kind of fun, but I stick to guitars.
They took way too many things away that were in RB2, that I'm hoping for a RB4 sooner than later. The game has been out since October, and not a single game changing patch has been released yet.[/QUOTE]