I have created a single particle slowly rotating disc (slowly rotating is the key here). However this is not without flaws, firstly this means that a particle has a high lifetime, low rate and low time scale.
In effect what this does is that a particle is only spawned at long time interval, this in itself is not a huge deal. Problem is that the time the particle emitter takes to initially spawn a particle is also very slow.
I have some ideas how to work around this by instead using a meshpart with surface appearance, and then just rotate the part manually (tween), but if it is possible to do it with particle emitter I would very much prefer to do it that way since I am also dealing with other effects such as Light Emissions, size, transparency and such, but this is a lot of unnecessary steps if it could be done with particle emitter that already have all these properties builtin.
Basically I want to create a disc particle that rotate indefinitely, it would be controlled by a script so it would not actually be running for all eternity.
In the picture I have 3 separate particle emitters that counter rotate from each other, while they would not have those colors but just to show the different emitters.