The guildleve change in 1.19 has pretty much made it possible to take a craft from 1 to 50 without even spending a dime as long as you set aside 2 months or so worth of leves to do it. Shortening the exp curve would just make it ridiculous.

Anyway, as someone said earlier in the topic. I hope SE takes player feedback about the current levelling curve and uses it to create a better paced rate of levelling whenever they decide to raise the level cap rather than keep bouncing us all over the place between 1-50.