Heya,
I think it would be awesome to have a website where people could share their EmberGen presets. I think a forum or discord are not the best place to share these assets.
A dedicated website would be good. With a Headline/Description, small Image/Video/Gif for a preview and then the preset as an upload. Also a search function. I think it should be as simple as possible, but not super chaotic. Maybe with different categories/tags, like ‘Fire’, ‘Explosion’, ‘Smoke’ etc.
Unfortunately I don’t have time right now to do it myself, but maybe someone else from the community does 
Cheers