1) Will be good to have a size over life (begin/mid/end) sizes (even non uniform so we can get long thin shapes
2) Looping for render wont actually disable so .. My idea is you can have bursts to render like 1x Bursts (non loop) but also with nx bursts with decay where you can affect life and alpha power (gives a kind of echo effect)
3) Super impose over sprite.. if you have a custom sprite you can load it in so you can line up effects with existing sprite animations or still art.
So far its awsome and fun!