Mirrorrorrim
Hero
Versatile without Flex isn't compelling because you have to use 2 hands for less damage than just wielding a 2-hd weapon. It really is for corner cases where you can get a small damage bump when you're not in ideal circumstances. But it shouldn't be bumped up to deal the same damage as a 2-hd weapon otherwise it invalidates that weapon.How many times have you seen characters actually flex their flex weapons? Because I haven't seen the Versatile property be actually used in practice since 4e. Which is why it's given to some weapons as a freebie.
I am more interested in a way to optionally increase my 1-hd longsword damage to 1d10, rather than have to wield my longsword in two hands to deal 1d10 damage. 1d10 damage with a 1-hd weapon is desirable design space, and Flex gives that to me, which is why I like it. Longswords should still deal 1d8 for non-masters otherwise it's just a treadmill for all weapons to get bumped up in comparison to each other. But it's ok for Masters to get that 1d10 as a unique option.