I think the only reason why we don't have BG is because everyone's willing to complain about not having it but then turns around and doesn't help at all in testing it out on the test server; it requires many people to be online at the same time, and a lot of testers can't really do that due to conflicting time zones and IRL issues
The GMs are going to be
very careful when, if ever, they implement renewal classes and mechanics. There's an FAQ about it on the forums. The thing is, it's an update that's still in the testing stages on official servers, and a very incomplete one at that - I'd prefer "old" RO than some half-done crap from the officials that the GMs would have to work all the harder to fix and balance.
New World is here; Nidhogg is changed not to be an instance dungeon (cool stuff imo), and as far as I know the towns of Manuk and Splendide are implemented but not the quests there. Mid-Camp + quests and Cat Hand are there though :3
Endless exists for sure, Sealed Shrine doesn't (to the best of my knowledge)
Anyways, have fun playing heRO. Helpful wiki of helpfulness is
here.