I have a level 28-30 range Warlock from when I last played Destiny about 10 months ago, he's got a bunch of exotic weapons and gear on him, too.
However I'm curious to see all the changes to the game, and re-learn some stuff I'm sure I've forgotten. Would you guys recommend rolling a new character for TTK? Just leveling back up to where I was, or am I right to just jump back on that old character? Gear is transferable (I think?) so if I were to level a new character all that gear would theoretically be waiting for me when I caught up, so that's a non-issue, I kind of want to see that old version of Destiny revamped. I never played the first two expansions either, for the record.