One thing I would to see from JR is new SD60 and SD60M models. While the current ones on the site are still good and still hold up by todays standards. They are a bit old now and could probably use an upgrade.
So here's some ideas for new SD60s if this does happen. I'll list SD60Ms in a separate post. Just a note however, most of these will be revamp ideas.
Norfolk Southern SD60 (Whitestripe, Horsehead and Ex Conrail would be good) Photo doesn't appear for whatever reason.
Conrail SD60 (Conrail Quality would also be nice)
CSX SD60 (Stealth, YN1, YN3 & Ex Conrail would also be good)
UP SD60
Chicago & Northwestern SD60
BN SD60
Canadian Pacific SD60
Canadian National SD60
EMD Demo & leaser SD60s
And finally Various leasing company SD60s including HLCX, CEFX, CITX, CRIX, GMTX and LTEX.
I can't include every single railroad company that owned SD60s as this post would get too long so quite a lot railroads ended up getting left out but I think I've given enough ideas.
So here's some ideas for new SD60s if this does happen. I'll list SD60Ms in a separate post. Just a note however, most of these will be revamp ideas.

Norfolk Southern SD60 (Whitestripe, Horsehead and Ex Conrail would be good) Photo doesn't appear for whatever reason.
Conrail SD60 (Conrail Quality would also be nice)
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CSX SD60 (Stealth, YN1, YN3 & Ex Conrail would also be good)
UP SD60

Chicago & Northwestern SD60

BN SD60

Canadian Pacific SD60

Canadian National SD60

EMD Demo & leaser SD60s
And finally Various leasing company SD60s including HLCX, CEFX, CITX, CRIX, GMTX and LTEX.
I can't include every single railroad company that owned SD60s as this post would get too long so quite a lot railroads ended up getting left out but I think I've given enough ideas.