The knife thread of the day! Great.
Then you need to nerf a lot of weapons
The max move bonus from tactical axe, is 0.45. +15% means 0.06 bonus, so 0.51 movement bonus.
Now let’s list all weapons that would impacted: Bolt pistol, assault shotgun, autopistol, recon lasgun, cleaver, duelling sword and combat blade.
Also, I would not be sure that it would be enough signifiant to feel that this is a real bonus.
Here the table:
