What are you looking for? Try the game if you're back. If you like it, stay, if you don't unsubscribe.
If you have a more specific question, ask it. But "should I stay" isn't a very useful question. The servers are busy, there is lots of new content, and you may or may not find the improved exp system fun. No one but you can answer your op question.
When it comes to sitting around not doing anything for long periods of time, only being active for short windows, and marginal changes and sidegrades I'd say FFXI players were the perfect choice for politicians.