[Habibi Jones]

I know that it may help but why go through all the trouble to have a rare chance to fizzle or stop invis pots, when we could either create another solution new potions or add a penalty to using invis pots or remove them all together and lower invis scroll timers idk, seems like something easier can be fixed rather than get a 50% chance to interrupt them with a firefield in certain locations while invised imo.

Well, the thing is that it's a SKILL based counter to invis potions, which to me, is a lot better than just adding a detect potion or taking out invis pots, things like that.
It isn't a random percentage, it's a percentage based on your skill at doing it. In theory you could land it on them 100% of the time.