Just to clear everything up
No I don’t think weapons are underpowered and I think they need a nerf, however, weapons are strong because of their ABILITIES. The actual melee aspect of weapons is pretty mediocre against anyone 1 meter aboveground.
I have a potential solution that might make things weird but could better things.
If using an attack slightly boosted you while midair, this could make things a little more easier, pausing your fall in order to aim a melee attack midair.
This boost would be directional, in the direction that your mouse is aiming (as indicated in the gif, up -> down -> up), able to be changed between slashes. The boost would not be very far, maybe 1 meter at the highest, the distance travelled in the gif could be adjusted. This would make damaging a midair target more than a single time much easier.
"tHis CoUlD bE uSed tO AiR StALl oR FlY"
Using attacks midair could either cost significant amounts of stamina, or have a limited amount of uses, as indicated by the gif, 3 uses while midair. This could change depending on the weapon, as knives/daggers do low damage.
"tHis WouLD DEal To MuCh DaMage"
The damage or hit count could be lowered if this gets too strong.
"ThIs iS UnReAlIstic"
You can literally float in place from blocking and jump 20 meters into the air.
Also just note I’m not suggesting these animations be added I just added them to make it look more fluent, but alternate animations for midair attacks would make sense.