I do very much like
4e as its own system, but when viewing it in comparison with SWSE, I was disappointed at some of the differences in direction.
Particularly, I feel that SWSE is as close to a viable classless d20 product as any official
WotC publication has come. It would take only minor tweaking to create a system in which characters are defined entirely in terms of talents, feats and skills.
It was initially a great shock to find that
4e had taken a diametrically opposite direction, with classes and their associated roles being rigidly defined as a fundamental aspect of game balance, and multiclassing options strictly curtailed.
In playing
4e, I've come to accept that that approach is also viable, and find it enjoyable in its own way - but I do miss the flexible system building upon SWSE's potential which I'd imagined
4e as during its development.