Maybe a bit late to the party, but my 3 concerns, in no particular order.
1) Who is the protagonist?
The Personal History becomes, after join an Order, a travel about an NPC-that-is-more-important-than-you-and-will-ever-be.
I’ve seen it often in tabletop RPGs, the GM has a favourite NPC that uses to interact with the game, that NPC is immortal, has better abilities, is flawless, has better equipment, etc etc, the PC are their servants at best. They are the Players, they should shine as protagonists, not as background characters.
Then, in the Living Story main arc, the PC as protagonist is vanished again, until the end in which you kill a ¿bad person? who has not been a rival to the character directly. Also, missing any update may make you wonder who those people are, they who insist in call you ‘friend’ but you cannot remember any meaningful interaction with they.
At some point the NPC motivations, the characters presentation, the Personal History-that-get-cut-and-derived-to-Treaharne-history, etc can mess one with other and make the PC the most irrelevant part.
2) Villains and antagonist interaction.
If you want a feared Villain that doesn0t have an apparition until mid-season, the watchers/players have to, well, fear that antagonist somehow, prior to the presentation.
In Heroes (season 1), you have one of the most feared villains in fiction. Sylar. I stopped watching that show somewhere between season 3 and 4 and never looked again. But it will be difficult to me to forgot Sylar. There were only hints of his presence, but we could look at the results of his actions. Every character in that show had reasons to worry.
Scarlett stomped a public act, stating that she was better than us and that everyone should fear her. She ‘stole’ a robot army that was clearly put there just some days before in order to be stolen. Everything in that robot army was screaming “enemies! enemies!”. It was similar to Star Wars Episode 2, when they found “oh, a lost Jedi that probably is a Sith used a lot of untracked money to build a clone army, well, we will use that army anyway, what can be wrong?”
In order to make us angry about her stealing a robot army, we should have some empathy for those army. Be there when is constructed, express our concerns to the Order, watch how useful is at cleaning some area, make living story updates in which the clockwork army defeat centaurs wave after wave and events in the area are changed to reflect this. Meet the team building it. Start interacting with the young sylvari apprentice assisting in the lab, look how the Asura bully her, put her in a relationship with the PC, in which the player can select if he accepts or rejects her love experimentation, make another NPC jealous of this depending the outcome… then she can steal the army, present herself as the main antagonist and the players will say “no you kitten, this is personal”.
3) Content that vanish forever.
It feels weird, for me, to put the dev teams to develop content that will only last few weeks and that is not reused, revisited or added to exploration. I’m talking basically about PvE here. The karka zone is the only one that I can sign and clearly say “like this! permanent!”, but is an abandoned zone that is not linked to any other zone in PvE. It should be accessible from other zones and integrated in the world as any other zone.
More zones is something I expected, so if you have to left the game for some months, after login again you see the map and there is something new, somewhere to go. The last LS updates had interesting stuff in changing existing zones, but adding new ones, or new areas in the existing ones, is something that seems out of the scope of the game/LS. This and the early “there will be no expansion” statements probably make many players to worry if the updates will consist only in temporary grinding fest to get the whatever skins/equipment is available those weeks, using a material/currency that will not exist again. The last update had at least a note saying when one of that currencies was about to expire, and that we could hold on the other. But during the different updates I collected lot of stuff that I don’t have a way to know if it’s junk or not. It may help, for example, to convert it to junk items once the currency/material is not used never again.