As a Canon DSLR user, there are two reasons I'd sell my gear and move to Pentax: budget-conscious weather-resistant lenses and super-small primes. But neither has the bodies to take full advantage of them, i.e., an entry-level body with weather-sealing or a low-profile DSLR body.
If Pentax had a K-r body with weather-sealing, they could market it to every photographer who wants to hike and take pictures in inclement weather but doesn't want to pay pro-level costs (Canon L lenses or K-5 body) and wants to travel light.
And if Pentax had a DSLR that looked more like the old K-1000 or were even more radical and had a rangefinder body like the Fuji X100, they could attract a ton of photographers who want the low-profile, street-shooter package. A tiny prime on a K-5 body just looks weird, but if you could lose the grip and streamline the rest, you might have something interesting.
If Pentax had a K-r body with weather-sealing, they could market it to every photographer who wants to hike and take pictures in inclement weather but doesn't want to pay pro-level costs (Canon L lenses or K-5 body) and wants to travel light.
And if Pentax had a DSLR that looked more like the old K-1000 or were even more radical and had a rangefinder body like the Fuji X100, they could attract a ton of photographers who want the low-profile, street-shooter package. A tiny prime on a K-5 body just looks weird, but if you could lose the grip and streamline the rest, you might have something interesting.