I'm a f2p, so I haven't even touched the expansion itself, but I've tried the systems.

Wizard's vault is kind of interesting - the rewards you get daily/weekly are probably too rewarding, as after doing some weekly and daily tasks, I could claim 90 gold, something I haven't ever gotten in 200 hours of play. I like how you can buy laurels as free to play now, I feel like it levels the playing field when it comes to WvW due to being able to buy ascended talismans, though no warclaw still hurts. Some of the tasks for the weekly challenges are terrible in my opinion, such as "escort 10 pack dolyaks in wvw" which is a literal chore that achieves nothing in the game mode. Apart from that, I do miss the daily jumping puzzles that would give momentary community interaction.

Relics are incredibly weird. They kind of ruined the choices between runes, now they're purely stats, which makes a rune choice very linear. Now, speaking of relics themselves, so far I'm rather underwhelmed - the majority of the runes are designed for a specific class in mind and their profession mechanic, which aren't applicable at all to the rest of the classes. The rest I feel are way too situational (depending on what type of elite skill you have), and the generalist relics such as faster weapon swap or better swiftness feel way too boring in comparison to the other relics.