Mez should be like it is today. Charm should be as is today. There was nothing overpowered in them before and wouldnt be compared to chanters after the nerf is on live. Because thats what it is, a nerf to chanters non-epic cc too.
Reflect. Diffrence should be in duration. Tripple the duration as seen today, and maybe make it like PoM. Problem is, this would become a MT team spell. Currently our role is that of ranged dps team. For the reflect to work in a raid environment and not change the current balance in raids, the spell would have to be raid-wide. Take the troub out of fight, 30s duration with 100% of fireing the proc, then 30s where any spell would be reflected. The amount of reflect could change depending on spell quality (eg 50% for adept, 60 for adept3, 70 for master). 5 minute recast since it would be pretty powerfull. Maybe even a significant cast time (10-15s).
Alternative could be a 10% reduction to spell damage raid wide, and always up. Or cast on single target in raid.
Interesting idea for the procs. Today a typical Wizard will get 4-5% added damage from the proc song. Would be interesting if it was 100% proc for 5% of the spell damage. Would actually make more sense then the random nature of the current proc song. Solo this would be more "dependable". With the random nature gone, you might even raise the proc to 6% :p
The Str/Sta buff is mostly a group/solo buff. In a raid environment most dps casters already have maxed int. Even I have maxed int :p Dont forget the solo part of Troubadour play. This is where we need the improvement most. Taking away the str/sta buff would severly [Removed for Content] the solo-troub. Maybe more then the cc-change and proc change.