First of all, welcome to CC!
Second, excellent variant. I'm an author here and I really enjoyed your presentation most. Great job on the document, it looks really good. While our format is perfectly acceptable and I surely couldn't do any better, it's nice to see something new and snazzy. I like the variant and especially the use of all the original components.
For my taste, Carcassonne has always avoided the use of dice, and I actually prefer it that way. However, if a dice component is going to be adopted, I think you've managed to do so in a very paletable way. I started working on an adaptation of the Horse expansion from BGG for this site and hoped to do so elimiating the use of dice. I didn't try very hard I guess. Dice would surely make many of the chance-based mechanics in the game a much simpler, but I supose it's the principle of the thing. Regardless, kudos on a job well done. Merit point for you after one post!
BTW: if you're interested in sharing more expansion/variant ideas with us, please keep them coming. If you haven't done so already, please check out our libary of expansions
HERE.