Yep, the two-compound rule has deprived us of some genuine surprises in the results - Sauber being one of those teams well-placed to try and pull that sort of thing off.
I'm not convinced.
I think the argument against the 2 compound rule is a bit blinkered. With everyone on the same tyre, teams will naturally converge on what they feel is the better strategy, which mean we will end up with what we had through most of the 2000's of everyone stopping within a lap or 2 of each other and no real strategy differences.
Having 2 or 3 tyre compounds available with no requirement to use specific ones could open up the racing, but the cost involved in producing and shipping all the tyres that would then go unused would not look good for the FIA's 'green' image, so wont be happening any time soon.