Hi,
Thanks for the suggestions! A 'hot spot' view is definitely a nice to have. I've been thinking about ways this could perhaps be included in the metrics view.
Something that I think will help with finding slow tests and projects would be to introduce different grouping options in the Tests Window. Although the Tests Window already lets you sort by execution time, the sorting gets disrupted by the groups, making it hard to actually find the slowest tests. If it's possible to flatten the try entirely, the sorting would be much more effective. Let me know what you think.
Cheers,
Remco