Is there a way to ask for a taxonomical limit for the suggested identification?

Take a look here.

I’ve been a bit annoyed by that as well, at a more general level, and made a feature request to enable a basic level of this.

In short, not really. You can sort of force the CV to suggest things by making an initial ID and then making a second ID, which is a really clunky andanniying way of going about it, but that has limits, and in my experience it doesn’t at all work when you get beyond the very most basic and broad of categories.

The main thing is to get enough correctly identified observations to research grade so that the CV can be trained on them, and hopefully that will result in more accurate IDs.

There is another more recent issue, which is that the change to ‘expected nearby’ which is a good idea) has superseded the older ‘seen nearby’ ID suggestion, and now appears to be returning less accurate suggestions in many areas.