teh only thing I like about it is that it gives weapons things other than damage die... why play a rogue with a knife 1d4 when you can weald the d6 short sword or d8 anarchism? flavor. Why penalize people playing for favor 2pts on average damage? If daggers were faster that would be diffrent... and a choice then.
Well, that's why I liked the weapon keywords and properties from 4e. Those created an actually interesting space. They could even have been expanded. Frex:
Accurate (+1 to hit)
Finesse (can use Dex for hit/damage)
Defensive (+1 shield bonus to AC while wielding at least one Defensive weapon)
Brutal N (reroll damage dice that show N or less)
High Crit (roll extra dice when landing crits)
Unstoppable (increase crit range by 1)
Savage (roll damage twice, take the higher value)
Blunt (replace normal damage dice with average value, rounded down)
Thrown (can be used for ranged attacks without improvisation)
Etc. I'm sure I could come up with more if I weren't exhausted. The idea being, the properties don't have to be
complicated, and each weapon could have (say) at most 2 properties, maybe 3 for fancy exotic weapons.
Of course I also liked the idea that you could have feats that hooked into "I use axes" stuff, but I doubt 5e is interested in that level of mechanical engagement.