@Konstantin@ : Thanks for your comments - we look forward to more feedback as you spend more time with Maple 2018.
I've got a couple of comments regarding 2 & 3.
2: This may not have been clear in my post, but maplemint is first and foremost a Maple command that can be used anywhere in your Maple session. You can call it using:
maplemint( SomeProcedure );
The change in 2018 is that the Code Editor uses this for code analysis. The Code Edit Region would be a nice addition for a future release.
3. Maple does still have predefined zoom increments under the View menu as well as in the options menu as system defaults. Just in case you haven't encountered it, you can also use the Zoom-In and Zoom-Out buttons on the main toolbar - these use more uniform stepping. What's more, I often use the CTRL+Mouse wheel to zoom in or out on my document. That being said, the zoom isn't perfect - if your comments are regarding a full worksheet zoom that includes plots, then I would agree that there is still work left to do!