i really like tired and chaotic's stats which you can see here :
https://steamhost.cn/steamcommunity_com/workshop/filedetails/discussion/440843961/144513248281420607/

but i would do a few changes.
this used to be medic's melee, and such i would turn it into a melee for the medic, so yeah, he would have the medi-gun AND it to heal. i would also add something from its TFC counterpart and the stat

Left clicking your allies will heal them by 10 hp [you can discuss the heal in the comments] and right clicking you enemies will inflict poison (which it would be like bleeding but the enemy would get a green "mark to death" skull and and no particles )

it may or may not help with increasing ubercharge.

so TL;DR

+25% damage resistance for the wearer
+Drops a medium medpack on kill
+25% reload speed for the primary weapon
Left click allies to heal
Right click enemies to poison