A developer in the community is working on Kodi integration with notifications and control functions. IFTTT before tasker because it’s on both platforms and you just sign in and go. Tasker is aimed directly at power users. I think the more valid question to ask is who is SmartThings targeting, power users or the average consumer?
Having just built a theater pc with Kodi, I can tell you it’s not just a simple install. I do have it working with my harmony home hub and will have it integrated into ST fairly soon.
Tasker
http://sharptools.boshdirect.com/installation-instructions
XBMC