Option for new classes for leveling

[ItMe]

But... You can already do this.
You can already choose to synch down and run Copperbell, Quarn, etc. until you feel ready to move on.

If anything starting at a higher level helps you move at your own pace. If you feel like you have the earlier stuff down... you're already levelled past it and can move on. If you're confident at level 41 you don't have to run Stone Vigil 5 more times.

[Gallus]

I've seen SE implement sillier things than this (no offense...), so they wouldn't have a problem adding a "start from scratch" option for every role, provided enough people asked for it.
Thing is...you are literally the only person I've ever seen requesting something like this TC, so you can practically forget about it, not gonna happen.