how the hell can you call it invalid? its all about how does the game feel when you play it - regardless of if you play free / founder or w/e else small bag space , lack of id scrolls for gold , no individual bank , no respecs (other than zen), constantly forcing you into gems this is a general feeling you get when playing…
lack of easly obtainable respecs is plain stupid if the game is set in stone - make a game with skills that work like skyrim - than there is no need for respecs - if you make it it like you did and just copy skill trees from other mmos than also copy respecting and/or multiple specs plain and simple
u are playing different game son gwf worst class until lvl 40 - at which point all classes equalize more less - so play 40 lvls as most gimped worst dps class - that's right lower dps than a cleric that will decide to dps