1. left click selection as default 2. maya style viewport navigation 3. add to/remove from selections with shift/alt (perhaps that's the default already? i confess mine is all custom) interface-wise: proper on-screen gizmo, ability to customize the tool shelf with drag&drop/GUI editor, preselection highlight for components…
Seems like a good idea. Although most programs aren't consistent with each other. For example in 3ds, 1-5 is subobject selection whereas in maya it's like smoothing and wireframe functions... pretty big difference. So it may be hard to define standards to match. One common meme is QWER for select-move-rotate-scale.…