Found this thread a bit late, but here is my 2 cents worth of inputs :
- reliable logging : sometimes, for unpredictable reasons, log stops working; at the same time, while the log pane appears empty, the SmartApp or Device Handler continue to work… or not
- strictly identical behavior between IDE and iOS/Android mobile App (ex: ticket #63621)
- IDE safe for saving modifications : sometimes (usually after some lengthy inactive IDE period), just when you want to save your latest modifications, the IDE brings you to the logging page, and once logged again, you discover you have lost all your latest modifications
- IDE lack of quirky behavior : to make it work reliably after a modification, I have to Save / Publish for me / goto SmartApps / select again my SmartApp / enter Location and Preferences /. Otherwise, when I just Edit and Install, nothing happens (or the log does not show)
- IDE error messages when some incompatibility exists between the IDE and the browser : for example, 10 days ago, I thought all my saved SmartApps had disappeared from the cloud/IDE : when selected, their window was totally empty (ticket #75037). Then I discovered it was a new and unexpected regression, with TenFourFox browser now incompatible with IDE, while it was perfectly OK before (Safari was still working)
- color schemes which make sense and are not kaleidoscopic : the latest modifications of colors are definitely not a plus !