Benjamin Olson
Hero
Well those are leveled spells, and we were talking cantrips (ie: the caster's equivalent unlimited resource). I see a goalpost moving.Those spells like Synaptic Static, Slow, Moonbeam and Burning Hands have been demanding far more saves at their respective level than a masteries equivalent saves. Affecting more than one thing in a round feels like a harsh judgement.
Of course a lot depends on party make up. Only a couple of classes get weapon masteries and they don’t apply in an every case as per my message above.
I’ve played D&D of all editions for a very long time and in 35 years I’ve never found it was the rogue or the fighter that was slowing down combat. In fact the opposite - their turns used to be painfully brief, as the wizard agonized over where to place their darkness spell.
The fact that I've accepted that figuring out the consequences of big spells will slow down combat does not mean that I want to slow down the resolution of basic attacks for the sake of some sort of martial v. caster "fairness in gumming up the works".