Sure, cutting the average monthly wait time by more than 40% is a significant improvement. But you can bet the international travelers still waiting in those one hour or two hour-plus lines will make it their mission to bad mouth their experience to anyone who will listen.
Using mobile apps to speed the customs process at the airport is a logical step. Anything that can speed the customs process while maintaining security has got to be a good thing.
Buying citizenship is a scheme that could lead to security lapses and corruption. Some of these small and gorgeous Caribbean islands are desperate to encourage development, and these fast-track citizenship-purchase programs are a testament to their economic woes.