I will be a little busy in the coming days, but hopefully I will be able to finish these portfolio pieces into something spectacular.
No, I use scripting that spawns particle system when the fireballs etc hits walls!
I will look into this!
About the smoke fx:
I like when the smoke effect blends in together with itself when they have the same color. Currently I have such hard edges on the dust texture so if I change color it is noticeable to see the particles and it looks bad, I change color in the beginning but turn them fast to the current tone for this reason.
I would be able to have the effect you speak of if the dust have the same lifetime, but that will make the smoke look weird.
I think I could animate the Start Color using a animator component! (or using another particle system pluggin, but thats a lot of hassle). Thanks for your feedback! I will try using the animator component and see what happens