Now don't take this to heart, but I didn't play Wildstar for that long so I have obviously missed out on the late game stuff and all of the little gimmicks that make Wildstar different to its rivals. However, first impressions can mean a lot especially when it comes to MMO's that want to keep their players interested long enough so they can get to the decent features at later levels that keep them nailed, glued and duct taped to the game for several hours more.
Firstly, I can assure you that Wildstar is your usual MMO with wandering monsters, character customisation, loot and hot-key based combat. It also comes with a confusing user interface and heads up display which you'll probably get used to after 15 levels of trial and error where you press every button and hope it doesn't remove something you probably needed.
The combat is actually quite fun where everything is skill-shot based which is something that Guild Wars did with 50% of the spells you were given. This means you will have to learn a completely different method of pulling the targets you want. You WILL hit everything you don't want to hit and I found this out the hard way because my shots were going through enemies and hitting people behind them. All of my spells did this. I ended up pulling the one creature I wanted, fought with it a short while before shooting the other 3 things that happily wandered by me that i didn't want anything to do with at this stage.