Can we request that you add a ring emitter to your particle system? We used to wrote it for our previous MMO and it’s very essential in creating many cool particle effects.
Ideally, it will emit a close-loop ring that use a tiled texture along its polygons with begin/end radius, begin/end width and begin/end height parameters like the pic below.
(There also can be many other control parameters, but those are the essential starting points.)
Right now the closest thing we have is a ribbon particle, and it’s very hard to create a nice ring from it.
Not to mention fuzzy texture when the ring is very large when it’s created with normal sprite.
(Something you don’t have to worry here because Ring Emitter always use tiled texture.)
Please consider this as additional assest to your particle system.