Honestly I cannot remember how many gates CID had. When I was there, in 1996, they were completing the expansion. Must of been 6 or so jetway equipped gates and a handful of ground level commuter gates. At the time TWA had gate for its DC9s and ATRs, NWA had one for its DC9s and ARJs (at least I think they were operating ARJs at that point), UA had one... maybe two. They had 737s and BAe 146s to DEN and I am pretty sure the same mix to ORD. AA at that time was most likely Saabs and ATRs to Chicago, Delta was strictly Comair to CVG with CRJs. I don't recall if they used a jetway... I don't even think a CRJ was there when I was in the airport. And USAir Express (Air Midwest) flew Beech 1900s to MCI. Plus Chicago Express flew J31s to MDW.
Seems like the right number of gates.
Stop drop and roll will not save you in hell. --- seen on a church marque in rural Virginia