To your questions:
Would Allen Robinson and Mack each possibly grant a 1st round draft pick to the right team? Mack, maybe. Robinson, no.
Eddie Jackson bring possibly a 2nd rounder? No.
Hicks and Goldman bring is 3rd or 4th? Would be a stretch.
Would the Giants be interested in Robinson for our 1st rounder back? Giants overpaid for Galloway and drafted a WR in the first. Don't think that happens.
Would trading Mack be a good idea? All depends on what you can get. Me being an Eagles fan I'm in a similar situation with Fletcher Cox. Great player, but if someone offers a 2nd it's done.
Who is on the brink of a playoff run but desperately needs a OLB? Not sure.
He is worth a first rounder? Possibly. Should be, but if you are on the brink of the playoffs that also means you are on the brink of a top 18 draft pick (if you miss the playoffs).
Ravens and Chiefs need defense help too. Maybe they’d pay a nice price for someone. - Salary cap would be an issue with both teams.