Hi.
We have actually been around for quite some time. We came from the company FGL, which has been around for years helping game developers.
There are no drawbacks. End users do not see anything different than if you had implemented ads or analytics on your own.
So, worst case scenario, for some unknown reason, Enhance disappears. Nothing will happen to your app. If you integrated appodeal or chartboost, or whatever.... those services are in your app, not Enhance. We are only a means to integrate these services.