no/no teams can win up through Reg Minors if they fall to the bottom leagues (not comp/elite)
http://goallineblitz.com/game/team.pl?team_id=7681 Gold in S28
I think the OP was asking more about the "how" specifics, which is tough to answer without knowing the planned lifespan of the dots. there are at least three leagues running now for no-no dots, one is 3 seasons (Monster Football League) and one is 6 seasons (Regular League Underground). Fairly different build plans for those two. there's also (Casual) League Underground where, again, I assume the builds are slightly different (as would be the roster make-up).
All of these have private forums that are open to join. there's info in those forums that could help answer the "how' of building.