You can want whatever you want. I was talking about what they did last year to better determine what they may do this year. The druthers of the fans won't determine what the team does as to how many at each position.
Since they carried 4 all last season, plus one specific RB on the PS all season, it appears that having depth with players familiar with the offensive scheme is important to them. Maybe they'll decide to keep Noel as RB4 instead, but my guess is Noel is more likely destined for a season on the PS, and Mattison carried as the veteran presence in the RB Room.