Hello Mark,
Would appreciate to place the Y-axis at the right of the graph sometimes.
I think this is a standard for most softwares, at least for price graphs. Not sure what is the standard for overlay graphs, % scale or portfolio value graphs though. Anyway, the Y-axis at the right can be sometimes easier to read, because the last price is next to the scale. And I would find useful too to display the last price (or value) in the Y-axis, with a specific color, as most of softwares do.
To summarize, more options to play with the place of Y-Axis : left, or right, or left AND right simultaneously (?). But perhaps an option per graph type, because for some graphs a left Y-axis seems more appropriate (overlay graph type) and for some a right Y-Axis seems more relevant (price graphs).
Thanks.