Question about Halo 5 Submissions

So I just kind of want to know how long I can still make attempts to add variety and spice to Halo 5 with fresh maps, will it end when Infinite comes out? Or wil Forgers still be able to create more content for seasons to come? Thank you.

ALSO, I know about the feature that you can add traits of one weapon to another, if I submit a map, will unique weapons get my map denied? and on that note, will hiding a non-gameplay-breaking easter egg in the map a thing im allowed to do for the fun of social players?

Hope to hear from you soon. Happy New Year