Honestly, something as simple as class specific traits targeted at class abilities (or even the shared abilities) would be a good start. Careful Syn II could be free for WVR and cost 15 CP as a cross-class (Careful Syn I would still be free). Hasty Touch and Rapid Synthesis could have 60% success rate for CUL and ARM. Rumination doesn't consume your IQ stacks when used by CRP, but can only be used once per synthesis. This would fit right in with how they already treat cross class skills with the DoW/M classes.
It's a simple change that makes the classes feel different without upsetting the already established norm of crafting. I still think that a lot of the base skills really need to get tuned so that they serve a purpose.
I don't know much about the team crafting. What have they said about it so far?
