My favourites, add your own. Looking for votes. They’re not all mine 
Feedback Case Number: 71719
All current polar plot options are categorical, I would like scatter and line equivalent polar charts. Rotation and Radius. Example provided in feedback request. Although I would like a line version also.
https://tracker.xojo.com/xojoinc/xojo/-/issues/71719
Feedback Case Number: 64928
Would love the charts to support logarithmic value axes, for scatter plots it should be optional on both x and y axes.
https://tracker.xojo.com/xojoinc/xojo/-/issues/64928
Feedback Case Number: 71720
Allow complete control over the axis, min, max and steps. +/- automatic with and without fixed 0.
https://tracker.xojo.com/xojoinc/xojo/-/issues/71720