are you sure about that? I thought SkyWest did RJ BW ground handling in SLC? I thought MSP, DTW, and SLC were the 3 hubs where DL mainline does not do RJ ground handling while they do at ATL, JFK, LGA (non Shuttle), CVG, and LAX. correct me if I am wrong.
even so, DL is adding MORE flights than what existed last year ON TOP OF the increase in gauge so DL employees would benefit EVEN IF moving flights from RJ oeprators to DL doesn't change who works them. the number of flights and employees needed are both increasing.
are you telling me that even in hub operations, DL uses the same number of employees to staff an RJ gate as they do a 739ER or 757? somehow I doubt it even if that is what they do in a spoke city where a crew might see a mixture of RJs and mainline on the same gate.