On the bright side, you have Sv, TAv, and User modes!
So, yeah, that is what a pro camera demands of you. If you shot jpeg scene modes with the K-3, you would probably not notice much of an improvement over the K-30 anyway, just bigger files. The sensor of the K-3 is a little better, but its the features that differentiate it from lower tiers.
But Im sure you will be able to learn and start taking great photos in no time, even without SCN. Just look into raw processing software (lots of threads with lists of these) and User modes (can be really helpful)