I was told by my guide last year that Falcon would fish even better if it dropped 20-30 feet. It makes sense to me because the bass have had 3-4 years of great spawns so the numbers are fine. With dropping water it would seem they would be even more concentrated.
That's what has been happening at O.H. Ivie from what I understand: the lake is very low there (again) and the fish are concentrated.
Initially, I would think that there should be no problems at Falcon other than potential ramp access issues (although concentrating the fish does make them easier prey for commercial fishermen on the Mexico side).
Part of what makes these lakes down south so good is the arid climate that produces lengthy stretches of lowering water conditions. That results in tons of vegetation growth on the exposed lake-bed. Which produces the "new lake effect" when the rains eventually return.
Where I would think there would be great concern is if this trend becomes more pronounced and/or lasts for several years in a row.