I'm a developer who's been working with FileMaker since version 9. I've branched into Javascript, iOS, and C#/Java (Let's face it, they're basically the same). FileMaker still remains my favorite tool for prototyping, pulling data, mining, reporting, interacting with, and organizing any kind of data. I can sit down with a person who's having a problem, and in some cases even while we're still sitting there together I can give them something functional immediately. I can even then write some scripts to perform the tedious parts of their tasks and free them up to make decisions on their data instead of spending all of their time managing it. With any other platform, it's hours and days at best.
We're excited about the new changes to FileMaker in our shop. I still wish that we could add transition and animation css to objects to take advantage of the very exciting things are being done with CSS these days, but one thing at a time I suppose.
On the Data API. We've been using Goya's RESTfm open source project to provide data integration with web, Android, and iOS apps. People can manage aspects of their business out in the field and come back to their desks to pull reports and make decisions on what's been collected. They love it. The only thing that gets me down is that the new Rest Data API is only good until Sept 27, 2018. This is a strategy by FileMaker to get more feedback and make the product stronger. It's hard to tell if they'll just continue using the same structure, or if they'll refactor and make it something else. So using it in production would be a mistake for now. Even still, you can bet we'll be experimenting like crazy. Using the REST methodology has been the best way to extend FileMaker to other platforms and it's been a great way for us to show the power of using FileMaker in tandem with a knowledgable development team. As a result, other affiliated organizations have taken notice of our work and are getting excited.
-Aside, on Bento-
Bento is basically a collection of predesigned FileMaker apps that don't get enough credit in my opinion. They provided a lot of really great starter solutions, which I think have been improved and are now mostly included with FileMaker. I haven't checked in a while, but I was able to open my sisters old Bento files using FileMaker without any problems back in 2012.