I’ d like to state at first that I’m stillf airly new but playing around wich the sentinel class and watching over countless sentinels build I feel like the different master class lack identity.
Generic skills like lunge, rebuke, warpath and hammer throw are so powerfull that almost every sentinel use at least 2 of these.
Also since you can use more then one master class it does really blur the lines betwen gameplays.
Basicaly you don’t have the Paladin, The void knight and the Forge guard but you do have the warpath, the hammer trower and the charagin wich can be a combination of any of the 3 master class.
The fact that you can spec into all 3 master class gives the illusion of diversity but what it really does, is it makes every build fairly close to each others.
I might change my opinion as I play more but so far I feel that class really do lack diversity.