I'm sure people have preferences, but from a power level how do people feel about the different mastery options? My rankings below.
Top Tier - always use when available
Middle Tier - situational usefulness
Top Tier - always use when available
- Vex - this is too good IMO, since it creates a cascade, where each hit increases the chance of another hit.
- Cleave - a "free" attack with some limitations.
- Sap - would be too good if it wasn't limited to 3 weapons.
Middle Tier - situational usefulness
- Nick - personally preferred no bonus action as core, but I understand why they did it. Makes it possible to use class ability BA with TWF.
- Topple - the only one with a saving throw, which weakens it. Prone can be really useful depending on the character, group dynamics, and initiative order. Works really well with the initiative swap from Alert.
- Shove - slightly better than Slow, as it takes away opportunity attacks and breaks grapples.
- Slow - solid combat control to keep an enemy at range. Very good with a ranged weapon to shoot and retreat.
- Graze - it's useful when fighting something with high AC, but the opportunity cost makes it weak. I suspect it will be one of the two options level 13+ fighters choose, in case they get a low roll.
- Flex - basically about +1 damage to your attacks.