"the sony lenses aren't very good"......Well sony lenses are excellent performers, for example the basic 'kit lens' 18 - 55mm is every bit as good as the pentax equivalent (despite being only two thirds the size)...I have used both extensively.
Also, Sony announced it's moderate wide (Zeiss 24mm f1.8)within months of NEX launch. Pentax STILL has no moderate wide f2 despite having made DSLR's for TEN YEARS!!.....AND, one can use just about ANY lens on the NEX models due to the very slim register and inexpensive adaptors from ebay.
The ko1 is locked into it's large lens register so not much future for adaptors and other lens makes or 'legacy' glass etc,.....plus apparently being 'styled' rather than designed, so disapointing really.......If the 'designer' was as good as made out surely a detachable 'K' mount (on a slim body) could have been encompassed (?) ...and then we might all be getting excited now!
I have in the past been an enthusastic pentax owner (one film system and one digital) but pentax seems determined to not listen to it's customers,...if only it would! Pentax has been a good company in the past and I would go back to it IF there was some innovation AND some attentiion and dialogue with customers.