When I load T9950 on this install, DarkConsole reports 473 queries. We should require fewer than 473 queries to render this page.
The DarkConsole "Analyze Query Plans" button does not work with Quicksand. This button should probably always execute a real navigation. This likely isn't trivial to fix so I just noted it on T13081.
The DarkConsole "Services" tab has some weird looking rendering on the tables, particularly an odd header border. This element looks janky, even for the award-winning epriestley design in DarkConsole.
There is no way to get stack traces for service calls in DarkConsole. It would be nice to provide these when "Analyze Query Plans" is activated.
There is no way to download/export a DarkConsole trace to share with someone. This would occasionally be useful for support workflows.
The "Events" tab could probably be removed.