As you can read from the above it all depends what user you are. If you need a new ROM every day: leave it as it is. For a plain vanilla user, that's me, there is nothing mind-throwing in 4.3.
For the last case, why don't you just use it for a couple of days, read around on GNote 2 with 4.3 a bit and then decide if you want it?
Sent from my GT-N7100 using xda app-developers app
Punctuation and spelling of this post are freely invented. Similarities with writing rules, ancient or current, are pure luck and unintentional.