The "spawn as much dots as possible" sounds like a spacefiller:
https://conwaylife.com/wiki/Spacefiller
But that's maybe a little too static for the "creating as much gliders as possible" part. You might like the glider-gun version of "Jason's p156":
https://conwaylife.com/wiki/Period-156_glider_gun
Or ... this last year or two have seen an impressive number of new glider-gun discoveries, where a very active small "engine" produces a dense stream of gliders:
https://conwaylife.com/wiki/Period-24_glider_gun#Other_perio... https://conwaylife.com/wiki/Period-25_glider_gun https://conwaylife.com/wiki/Period-48_glider_gun https://conwaylife.com/wiki/Period-15_glider_gun https://conwaylife.com/wiki/Period-16_glider_gun