Here is a script with the most often used parameters from Render Setting and a little from Material Editor
Script is in WIP. So a proposals and feedbacks are welcomed

How to:
1) Drag and drop Corona_tweaks_v1.xx.xx_dock.ms into viewport of 3dsMax with the same Corona Renderer version;
2) Open Customize>>Customize User Interface...>>Toolbars>>category:"Corona Renderer";
3) Drag and drop action "Corona_tweaks" to panel;
4) Press button
5) Enjoy
Tested with 3dsMAX v.2014 and 3dsMAX v.2015
ps: If you want that panel was opened in one time with 3ds max you need to copy Corona_tweaks_v1.xx.xx_dock_STARTUP.ms into c:\Program Files\Autodesk\3ds Max 20XX\scripts\Startup\
If you need to do floating panel just move mouse on any border part of the panel and double click or open right click menu and click float