Suggestion: Baseline color

It might be useful to emphasize the baseline color in a way it does not vanish through the Grid Spacing lines. Alternatively adding this feature in the Pref>User Settings.

I have a look to make the vertical metrics lines more visible.

I find the metrics lines visible enough. In your case it is mostly obscured by the offset preview. Any other opinions?

Agree with Georg. Why don’t you add a guideline at baseline?