Core looking great!

[*ochocincos*]

I'll add this...if Core has progressed as the Hobson articles are eluding to, Erickson is the the one on the hottest seat.
Core looked like a much better WR than Erickson last year, so him improving on that should widen that gap (unless Erickson has made at least similar strides as a WR, which we haven't even heard anything of the like).

I think Erickson could (and should) be the one dropped if only 6 are kept.
Everyone supporting Erickson has been talking about his return value at both KR and PR.
But while everyone points to Erickson's very good season last year at KR, he wasn't great at PR.
In college, Erickson was primarily a PR and only had two KR attempts. What this tells me is that needing a lot of KR experience isn't needed to become a good KR in the NFL.
Also, when looking at PR production in college, Tyler Boyd was a better PR than Erickson and I believe Boyd could take over that role. Adam Jones should be able to take a few attempts too. When looking at KR, there are plenty of options including Adam Jones, Brandon Wilson (44 attempts in college, 25.5 YPA), Joe Mixon (22 KR attempts in college, 22.9 YPA), Tyler Boyd (46 attempts in college, 24.4 YPA), and John Ross (86 attempts in college, 24.1 YPA).
Last, people talk about how he was the leader in KR yardage and second in YPA with eligible players, but the eligibility cutoff makes it so the list is only 10 players deep. A majority of teams are sharing return duties, and if you expand the list to 15+ attempts instead, Erickson's ranking in YPA is actually not second.

TL;DR - While Erickson had a good season at KR, he didn't need much experience to succeed at that (so lack of experience shouldn't prevent others taking the job), he didn't have a great season as a PR (which he actually had more experience with), there are a bevy of other options that can do PR/KR, KR is being phased out more than PR, and he doesn't offer much as a WR.