you are looking for that one good seed, you click random, random, random, countles times.. you do it for half an hour until you finally see a good seed....
and then you click random again and its gone...
can we have an option to go back to previous seeds that were alredy shown in preview? whole history doesnt have to be kept forever, it can be cleared upon starting the game.
for long term storage, there should be bookmarks, allowing us to save seeds we like or might consider for future gameplay
and also custom map profiles.
with so many sliders to adjust its annoying to copy/paste seeds in and out from notepad or looking for previous saves for that one map setting you want only to find you have deleted the save or there are so many you cant find it.
it all should be accessible within factorio without the need of external tools