First of all. It depends on how is there at #8. I consider Burrow, Tua, Chase Young and Okudah are locks. Simmons and/or Brown will be gone too. Herbert is most likely also gone as it looks like CIN, LAC and MIA are all in the market for a QB. The Giants are the Joker because they could go with OT, WR or one of the Auburn D-players.
That leaves:
- Possibly 1 of the Auburn D-players
- Minimum 3 of the 4 bluechip OTs
- Minimum 2 of the 3 bluechip WRs
- DL Kinlaw
Also remember that the 2nd tier in the draft is considered to be one of the best ever. So the quality of players usually drafted 8-18 overall will be available most likely through the 1st round.
I only think there are two ways a tradeback could happen.
As I already stated, most realistic scenario is to more back a few spots with the Jets or Raiders. They secure the WR or OT that they want and the Cardinals pick up a high 3rd (possible a with a 5th or 6th on top). I makes sense for those teams to secure the players that they want, between Simmons/Brown, a WR, a OT or Kinlaw. Cardinals pick up extra draft capital and can not pick a OT (One of the 4 will be there), Kinlaw or double down on a WR. The trick is that the Raiders and Jets come into this draft with more or less the same needs for OT, WR and DL. If that extra pick worth not getting the specific player you want? OR do you have them grated equally?
The other scenario is a top team going all in to secure a bluechip player and betting the draft to do it. This could happen if Herbert is there (NE), if one of the D-players are there (DAL, MIN, GB) or most likely to secure the #1 WR (PHI, GB, BAL). That will most likely cost swapping 1st, next years #1 and something between a 2nd and 5th depedding if it's #17 (DAL) or #30 (GB). They get that 1 player that they believe is the missing piece.
The Cardinals get a package of picks and can choose the 5th/6th OT, 1 of the top LBs or between the 2nd group of D-linemen (Blalock, Chaisson, Gross-Matos).
I would personally like to trade down, but as you trade down the risk of missing on a player that you want.
So trading down to #11 or #12 and get 1 of Willis, Wilfs or Thomas or Kinlaw. Great!
Trading further down, picking up a bundle of picks and get a Austin Jackson, one of the top LBs or DT Blacklock to replace Peters in time. Great!
They problem is if the value isn't there for the positions you need. Not sure if I'm willing to take that risk.