There's only one serious drawback to DWC/bubblers- an air pump failure can trash your plants quickly if you're not right on top of things.
If I built a bubbler, I'd probably organise redundant air pumps ie. 2 airstones in each bucket, driven by 2 separate air pumps. I'd also replace the air pumps yearly. That's about how long their natural rubber diaphragms last. Some air pumps include spare rubber diaphragms, which could be replaced at about the same interval.
If using UV ionisers/ozone generators for pathogen and scent control, remember that ozone is very hard on rubber parts and will cause them to dry-rot and crack sooner than if only exposed to air. You can locate your air pumps in a place where they are not drawing in ozone in the air they are pumping to reduce this effect.
Alternatively, most centrifugal aquarium type water pumps have an aeration fitting that uses the motion of water to draw air in through a small tube attached to the pump output. Small aquarium type water pumps are oodles more reliable than the cheap aquarium air pumps.