Thanks for the kind comment 
most of that stuff is somewhat outdated though 
About the datatables and other currently available approaches:
I have a sort of “vfx kitbash toolbox” project in 4.22 that contains almost all the textures, materials, meshes, and particle systems (1300+ and growing) I ever made (minus most nda), purchased and downloaded.
https://i.gyazo.com/93e0826b5599e98cf5ba988e130769c2.gif
And I rather not move any of these, or add the entire thing to data tables.
I would prefer it if I was able to apply any of these into FluidNinja and see its result.
Perhaps an “Apply currently --in content browser-- selected particle system” button? just like the regular UE4 UI always has? (which might be more clear than having all these emitters popping up in a list)
Workflow wise it would not make much sense to either move any system I’d like to try out to another folder, or copy the emitters inside a system to a system already in the aforementioned folder. Neither would it make sense to try and apply any or all these systems to data tables.
If needs be, please contact me through email/discord and we can work out something if it would mean I’d get a “Apply currently --in content browser-- selected particle system” button.
Additionally, NinjaFluid seems to have problems with bursting particle systems that are not looped/not the main emitter in a system. I need to disable and enable the first emitter in a system to make it render any additional emitters in the system.
(4.22)
I hope we can work something out as I really love what this tool could do for me.