I have mixed feelings on this one. The whole point of Spy is that you are gonna be difficult to see, and though invis players are difficult to fight, of course, there are a few workarounds on this one:

-Use a CC sword. If you do manage to hit the user, the Fire Aspect enchantment lights them on fire, making them easier to see.
-Get a resource pack with huge particles. It may look clunky sometimes, but it does help you track down the user better. I personally don't know any particular ones, so you'd have to ask elsewhere about that.
-Just run away and avoid arrow shots until their spy runs out, and hope they don't have another invis potion in their inventory.

Sure, this may be useful, but it just adds to the list for our already-busy developers, and kinda removes the point of buying spy. For now, however, I'll go with ±0.

 

If you are good at finding invis people this wouldn't be necessary. I my prime, shortly before I quit SG, I could track an invis person as if they weren't invis. But, that takes a ton of practice; and since I haven't played SG in quite a while, I probably can't do it as well.

Conclusion: Practice finding invis people. If you get good enough, they will be a nuisance, not a threat.

 

lol I like your logic ;)

As for the suggestion, I kinda like it +1

 

-1 The whole point of the kit spy is to be hidden. Although spy is kinda op right now, I feel like this isn't the correct approach to fixing it.