So, since the old arguments of "class change will ruin the game because FotM" aren't really holding up, I decided to address the new fancy contrarial argument against it -
Namely "Why would they sell class change, when they will make more money of you making an alt of another class and buying all the dozens of skill line skips".
That argument has a few flaws in my opinion. First, I'll point out that class change is mostly desired by people who care about achievements, research, map completion/quests/story, Motifs, recipes, etc. Unless they add all of those things as a crown store skin (which I wouldn't be surprised at, 2k crowns per achievement sub-section!, 3.5k crowns per complete motif, 5k crowns per completed zone story etc. please no) But let's put that aside for now.
The skips in the store right now are, essentially, there to provide you with a way to skip content you've already done, by duplicating it on another character. It's for alts, not for mains.
Now, class change tokens. They would serve the fuction of altering a character's class to something else. Give up one for the other. A service that's different, and more main-character focused.
The above mentioned argument against class change can also be applied to ALL change tokens we have now:
Why should they sell you race change tokens? You should just make a new character of that other race, and buy the skips.
Why should they sell you alliance change tokens? You should just make a new character of that other alliance, and buy the skips.
etc.
I believe that race change tokens are in line with ZoS monetization approach so far, and find it baffling they have not been implemented yet. They are perfectly in like with all other tokens up to date, in that they provide you a service to alter something about your character that you desire to change. Be it appearance, race, name, alliance.
Thus, the outcomes I see are two - either they add the race change token in line with their design so far, or they remove all other tokens and encourage people to "simply make new characters and buy skips", as per the now common new argument.