This is a really good question! Personally I am in two minds about the changes
On one hand I think its excellent because now I can finally play my conjurer in Freeport, try a hand at being a ranger and a few other things. Plus there is the obvious benefit of having access to all classes for groups, raids etc. However that in itself is a double edge sword.
Although it has been speculated about alot, I dont think weve received a solid answer from the development team as to why this change was made, but its pretty certain that the reason is because people on the PVP servers were having "problems" with T8 raid progression that was not occuring on the PVE servers. The solution that the players came up with was to exile, and progress that way, which imo is pretty intelligent and not in any way against the game mechanics. I mean really if you can survive at level 80 on a daily basis as an exile, when everyone in game can attack you, have at it lol
Exiling meant having access to all 24 classes thereby making it easier to complete the harder t8 tiered zones. It also meant abandoning your guilds and friends and becoming the enemy.
The problem though is that people were finally succeeding both on the Qeynos and Freeport side without having to exile. We were accomplishing these "impossible" zones without having all the classes and without abandoning our friends just for mythical weaps. Sure itll make it easier on us to have them now, but I guess its a sense of pride that alot of us wanted to achieve the same as the exiles were capable of, unfortunately now we wont be able to. Sure we can say we wont take any of the new classes, but honestly whos gonna believe it.
So ultimately its good and bad. The only thing I do wish is that Sony had taken a bit more time in making this decision and accepted some feedback from the PVP community before deciding to go ahead with it.