Some NFL players are drafted at least partially due to the impact they can make right away. Other picks are more about long-term potential and development. Generally speaking, the earlier the pick, the greater the likelihood of a major immediate role. But that's not a perfectly linear relationship, as other factors like a team's depth chart matter as well. Let's sort the Vikings' nine recent draft picks into tiers based on how likely they are to have a significant role on offense or defense, not just special teams, during their rookie season. Day 1 starters DT Caleb Banks (Round 1) DT Domonique Orange (Round 3) Both of the humongous defensive tackles the Vikings selected in the first two days of the draft should slot in as immediate plug-and-play replacements for Jonathan Allen and Javon Hargrave in Minnesota's starting lineup, even if they'll be part of a rotation to keep them fresh.…