I really think the type of WR that is at the top of Kubiak's depth chart has more to do with the fact that by far the most talented guys we have are small 4.3 speed guys and not a conscious effort to have small 4.3 speed guys as the starting WRs. Tipton came in because he's the best fit to play the Shaheed role and he might even be the 3rd best WR on the team. Wilson is probably a better fit for Olave's role.
Kubiak came from S.F. and they run the same basic scheme using bigger WRs that run around 4.5 because those are their most talented receivers (Aiyuk and Samuels). In Miami they run the same scheme with little 4.3 speed guys because those guys are their most talented receivers (Hill and Waddle). In fact last year when Miami started to slide many said their issue was all they had were small 4.3 WRs and for the system to work right you need some bigger WRs like what San Francisco has. And all offseason people were looking for the Saints to find a bigger WR to fit the system. I think the system can work just fine with smaller 4.3 guys, but it's not a requirement of the system overall to have small fast receivers instead of bigger guys.
Good OCs adjust to their talent and that is what Kubiak is doing. If at some point, and I think it's highly unlikely, Means or Perry beat out Olave or Shaheed, he will adjust the scheme to fit what they do best. In the mean time, sure they are complementary pieces, but that's what all backups are until they reach starter level.