I've implemented the Personalize Visuals feature on the scatter charts in a report that I am developing, in which scientific/technical data is displayed and can be explored. It works quite well, but testing has revealed a couple of issues that are preventing the full roll-out of this feature:
1. There does not appear to be a way for the user to change the axis type between linear and logarithmic. Without this, I would have to use the 'hack' of making four versions of each graph (with lin-lin, lin-log, log-lin, and log-log axes) and using bookmarks and buttons to switch between them. However, this of course isn't ideal, and would have the effect of 'resetting' the graph's contents (to whatever is set up for the bookmark) each time (instead of just changing the axis type and leaving the data selection unchanged).
2. When the user chooses a new field for one of the axes, the numerical data is summarised (using 'Sum') by default. This is not something that you typically want when plotting technical data. In the worst case, the user might not notice that the data has been summed up, and could draw incorrect conclusions. It would be much better if "Don't summarize" was the default option here, or perhaps the report developer could choose the default summarisation method when configuring the visual.
It would be great if the Power-BI development team could take these points as feedback / feature requests, and if someone could help with any other workarounds, that would also be appreciated.