I have started using Safari as a baseline for all of my web development projects, then using workarounds where appropriate for issues with other (mostly older) browsers. As far as I understand, Webkit is the most standards compliant layout engine available right now (am I wrong?), and it appears to be "leading the pack," so to speak, with HTML5/CSS3 support.
So I'm wondering what I'm missing (if anything), as long as i implement graceful degradation/progressive enhancement why shouldn't Webkit be used as a baseline? Does webkit have any serious design flaws that I'm not aware of?