"no go zone for bed" only is not very useful, just having a guide on the bed with markings so you can move your parts away from damaged areas gets the job done in 99% cases and you can easily do that by making stl of the print surface and importing it into s3d.
what would be waaaaaaaaaaaaay better is to be able to import stl into "printer settings" that defines "no go volume" inside the printer that generated g-code would 100% avoid at all cost (never print inside the volume, never move head trough this volume .. etc).. I'm sure everyone have at least 2 use cases for this type of feature

gcodestat integrates with Simplify3D and allow you to
Calculate print time accurately (acceleration, max speed, junction deviation all taken into consideration)
Embed M117 codes into G-Code
Upload your G-Code directly to Octoprint
open source and unlicence