I suspect some of this has been asked for already, but:
Measurements - It would be really helpful if there was an additional annotation field for measurements (for a description in addition to the measurement itself; like "MAX CLEARANCE").
Measurements - It would be really helpful if it was possible to edit / view the XYZ co-ordindates of the start and end of a measurement in the Selected Item Properties pane.
Rigging Points - It would be really helpful if there could be more than one annotation field for rigging points. In the same way that a fixture has unit, patch, circuit, focus, optics etc.
Rigging Points - As per the other poster, it would be really helpful if one option for rigging point annotation was it's position relative to zero.
Text Object - Some kind of way to add size adjustable text to the main workspace. Currently you can add text to a plot, but this needs to be done for each plot you want that text to appear in (in difference to annotations and measurements). You can add an annotation to a symbol to create text that way, but the size of the text to locked to the plot style, so all text has to be the same size.
At the moment I normally have to add annotations to the PDF exports of Capture plots which is very time consuming. These additions would be great.
Thank you!
Gareth