We’d definitely like to build this feature – and thanks to your support and votes we’re moving it up our backlog. We’ll update again when we start work on it! Thanks!Anonymous commented
Yes, filters are needed. And measures area too.
We’re actively working on adding IntelliSense support for M authoring in the Advanced Query Editor, Formula Bar and Custom Column dialog. Expect to see these capabilities in one of our next few monthly updates, hopefully before the end of 2016. : )