Layers and locks.
Please add the ability to show/hide layers, as on any other design program. Also the ability to lock/unlock an item to avoid when group selecting. Use InDesign, and learn.
you can show and hide layers using the selection pane (its like a layers window for ppt), and for the second issue, you can select a group of objects, then shift-select the item you didn't want to select in that group. actually even if they implemented your lock suggestion (which has other more practical uses), the technique i described above would still be less clicks in total.