I would say the expansion is fine, but still needs a lot of polish.
Beyond all the issues Pharone had, I would add:
The voice acting is super inconsistent, in some cases only voicing some of the text. Even worse, its not always the beginning text that was voiced, so you'll start reading paragraph 1, only for the voice over to simultaneously start reading paragraph 2.
The finale seems very rushed. You'll run through an essentially instanced huge enemy shipyard with nothing beyond the questline there - no exploration, no treasure, no itemization aside from trash items. And god forbid you leave in the middle of that questline, as the game doesn't mention where the warp point was to get back there, nor do stable masters connect to it. If this is a to be released raid / dungeon they reused, I'm somewhat okay with it, but otherwise this screams "Fuck it, we have to ship it tomorrow!"
Also the actual ending seems out of left field. If you're wondering how all this desert stuff ties into the LotR you know from the movies / books, well, desert bad guys attack Gondor, but they're defeated and everything's fine. There, I've just summarized three expansion's impact on the overall LotR narrative. The devs have even said the next landmass isn't tied to this territory. It's not bad if you want more LotR, but it also feels VERY inconsequential to LotR as a whole.
Even if the meta deeds did have cosmetics, you couldn't get them anyway - one prereq is tied to instanced content (which for the third(?) expansion in a row, isn't in the game at launch), one is under the world (but can be used with targetting commands), and one is still out of bounds last I saw...
... but you wouldn't want to complete them even if you could. Not only is there a level cap reputation grind, not all the tiers for those reps are uniformally available. Most of the meta-deeds give rep to a rep that's not complete (City of Zajana) so lets hope you don't complete them on a rep that's only temporarily maxed.
Beyond map markers being wrong, some questlines require you to step in the correct postage stamp sized area to progress them (at least one is both a tiny activation area AND has a wrong map marker). It's not quite as bad now since many quests are getting detailed in lotro-wiki.com, but it had me _this close_ to just putting this down for a month until the info was out on the internet.
Speaking of the end game daily quests, some of them have been disabled due to bugs - but only disabled for players being able to get them. They still take a slot in the daily quests vended that day, so you just get less options you can complete. It's not that big a deal, as your task turnins will complete the four city reps before long, but it is extra annoying the raid group (and task-less) Hunter quests have a broken quest given how people want their necklaces before instanced content starts.
Also, if you didn't think figuring out where the daily rep quests were was annoying enough, they've changed the rotation at least once, because screw you.
Also note that bounty quests are not the same as Hunter quests. Bounty quests are available daily... but dont count to the weekly max level daily quest wrapper, and only return coins you've long since maxed anyway. And don't give rep.
Oh yeah, and the missions have mobs with way too much resistances, and also dont give rep. Save yourself the hassle and just go back to Ub Nishir to do your level 6+ missions, it's far faster and less annoying.
Oh yeah, and there are a mountain of weird bugs and issues even beyond the above, e.g. essence (slotted gem) reclamation scrolls still don't work on class items last I checked.
I don't have an issue throwing $40 at the team every year, but unless you are way into instanced content, there is very little point in rushing out to play their new content until it actually gets debugged.
