Should I get back into the game?

[ArnyDahaka]

le sigh, I love how some people feel the need to snark without addressing the actual topic :/

Anyway, I think you should give it a shot. From your list, they're fixing the fate grinding(dungeons will give roughly 3 times as much xp as they give currently), possibly the leveling tedium (see dungeon xp increase), and the lack of content (one new dungeon, two HM dungeons, a new raid, and EM primals).

That all being said, it's also really subjective. Many people are already saying that 2.1 won't really be giving all that much content because of loot lockouts and the fact existing content will likely get levels 50s to their Mythology cap faster by using Wanderer's Palace instead of the new stuff.

I personally play content for the content, not with the intent of getting it out of the way as fast as possible, so the prospect of new dungeons and Crystal Tower to run through is downright awesome for me. For you? Well, maybe. Alts will certainly level faster, but that would be through running dungeons, which will still be just as linear as when you went on hiatus.

As far as combat and the Summoner, well, those will still be the same, and probably will be for the lifetime of the game. If you ask me though, if you're paying for the sub anyway, you might as well meet the patch in person and try it out after it launches.