It looks like you're new here. If you want to get involved, click one of these buttons!
For the first request there is a solution: on the "Misc" page in the Setup dialog, check the "Select all hierarchy levels" checkbox in the "On Cell Change" group. I admit it's somewhat hidden ..
For the second request, there is no simple solution currently. It is possible to remove all icons from the toolbar with a Ruby script which effectively should collapse the toolbar. In earlier Qt versions the dock management did not work well, so I fixed the location of the toolbar. I'll check if Qt provides a nice option in between so the toolbar can be collapsed if necessary.