While I do like intellisense, we work with some projects with scores of environment variables. The ability to have an "contains" type search to allow filtering was incredibly useful. Now, I have to know the name of the variable (or at least what it begins with - aside from the cumbersome %env.) instead of being able to filter by all containing a term. While the filter was ugly, it was useful. IMHO, you've reduced usability in favour of aesthetics.