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What if buying a full heal only brings you up to 50hp? It instantly brings you up to green without stopping while pausing to get healed by a Medkit nets you 30 extra health. 50 hp brings you up to green, but it only takes 11 damage to reduce mobility so it gives the Infected a chance to take him down still.

I like the idea that bile can extinguish fire. After being biled, the tank cannot catch on fire for the duration of the bile. It should still take damage if it's walking around in flames, but doesn't catch on fire once its out. It makes the survivors choose between a blind tank or one that takes DOT. Idk if this is able to be done though.

The point I was trying to make is that the 3s protection is a poor method of controlling fireworks and bile spamming. Fireworks spamming happens all the time regardless of the 3s rule and you're rarely going to need another bile 3s after you bought the first one. It interferes with way more aspects of the game. It prevents healing as and SI in rapid succession. When I'm running with a teammate and buy an adrenaline, pass it on, and try to buy one for myself, that momentary pause can prevent you from taking the shot.

I rarely buy fireworks and almost never buy biles.

3 seconds is too long in my opinion. There are many occasions where I get tripped up because of the 3 second rule. I think 1.5 seconds is plenty long enough to prevent an accidental rebuy.