Option to have a centralized baggage drop-off instead of only at check-in desks. This would eliminate the need to run baggage belts behind every single check-in desk.
My airport is moving away from the former and adopting the latter model. It saves a lot of space and reduces the number of machinery present. Passengers can check-in at the multiple self-serve kiosks available and these kiosks print out baggage tags/stickers. These kiosks are generally served by a fewer number of airline agents who are there to assist with those experiencing difficulty through the self check-in process. The passengers then take the tagged baggage to the centralized baggage drop-off themselves.
The trade-off is that the centralized bag drop-off needs to be at a place where passengers logically travel towards, is at risk of congestion, and needs to be staffed. Still this doesn't replace the need of traditional check-in desks that can perform more complex tasks that a self-serve kiosk cannot, but you'd have less check-in desks because in the same space of a check-in desk you can have 2-4 kiosks.
I guess the check-in kiosks is another suggestion that complements the centralized baggage drop-off suggestion.
This video demonstrates what I mean for check-in kiosks. However the video shows baggage drop-off at just another "check-in desk". That could work too.