If you're just using a view interactions, the Sierra interface is very good, and it leaves the most room on the screen for pretty graphics.
If you want multiple verbs, the Lucasfilms one is excellent; you can go up to at least fifteen verbs without cluttering up. However, for a Lucas GUI it is very important that you implement keyboard controls!
Personally I've never quite liked single-click things like QfGV, nor do I like verbcoins (because the click-drag-release movement gets on my nerves, but with a decent keyboard alternative it would be very workable).
I second Strazer's idea about multiple keys per action. Also basic stuff like Esc=controls, Tab=inventory, F5/F7=save/load, etc.
If you want multiple verbs, the Lucasfilms one is excellent; you can go up to at least fifteen verbs without cluttering up. However, for a Lucas GUI it is very important that you implement keyboard controls!
Personally I've never quite liked single-click things like QfGV, nor do I like verbcoins (because the click-drag-release movement gets on my nerves, but with a decent keyboard alternative it would be very workable).
I second Strazer's idea about multiple keys per action. Also basic stuff like Esc=controls, Tab=inventory, F5/F7=save/load, etc.