Well I'm not a very experienced player in Albion, so I'm possibly alone in this, but here goes my 2 cents about the game.
First, the initial moments in the game can be a mess. Understanding the game was kinda of complicated at the start. The whole destiny board and its branches felt poorly made, mainly when it came to the .1, .2 and .3 division (especially in terms or armor). It felt like the game did not teach its own rules in any form, so I had to learn by myself and by asking friends. I think this will be a gigantic let down to new players when they join at official launch.
Second, it feels like when you get certain tier of gear you are stuck unless you are a member of a big guilds. Farming in red zones is idiotic, even when you are with Albion Online Silver. PKing in this game is not only rewarded, but encouraged at the maximum by certain development choices. There is simply too low of a risk when ganking some red zone dungeons. It's free loot without any consequence besides a few minutes of waiting at a corner of the map to click on the shield. Thing is even when I'm playing alone or with a few friends we still decide to turn on PK and kill farmers, because why not? This is what gets me, the fact that I can't see a reason why I shouldn't do that. There is basically no risk or punishment, nothing. This is theoretically a sandbox PvP MMO, yes, but I don't think it means certain choices shouldn't bring certain consequences.
Third, zergs. Honestly, I have never understood the fun in ganking a solo farmer in a group of 10 people. I've been in both sides of that situation many times and always found it extremely boring.
Fourth, the Albion Mall feels completely broken. I haven't seen people complaining about this but certain weapons have a horrendous advantage over others due to the crafting cost. It looks like weapons that are overpowered in .1 (e.g. crused, frost) or .2 tiers (e.g. cursed, warbow, heavy mace, polehammer) have a really big advantage over weapons that demand x.3 to be viable. In a game where logistics is essential paying 1/5 of the price for a weapon of equivalent power means a lot. As a main crossbow this bugs me a lot.