Booked my wife and I on separate tickets from JFK to SXM (only 1 X fare left, so by ticketing separately we saved a few bucks instead of both ticketing into T). Our rule of thumb on upgrades is that we'll take whatever we can get (i.e. we'll separate if only 1 seat up front).

Should I ask Delta to link our record locators as traveling together? Or would that cause us to get skipped over for upgrades if only seat is available when we get into the upgrade window for clearing in advance?

We're both DMs this year, if that changes the answer?
Next year, I'll be a PM and she'll be SM.

I guess my question is broader than just upgrades. Curious about overall strategy and pros/cons in the future re ticketing together in same locator, linking linking two locators, leaving unlinked?