Your comments

Thanks for the explanation. The idea of the large hidden plane sounds good, avoiding the extra step via the toolbar. A plane can also be adjusted easily, when not aiming for Y=0. Thanks.

Yes, snapping would be great!

Related:
Peek works fine, when placing assets on existing ones. Would be cool, when placing assets into the void, that they would be placed on zero regarding the Y postion. So, this should apply even if (the considered) snapping is off.

Thanks!