Your conclusion was Druid 20?
Aside from that, check out my answer to #3. It's right up your alley already, minus the Dinosaur sidekick. You can pick that up via Leadership, being in Eberron and making friends with Halflings, or just buying an egg of someone somehow. I'd come up with something more tailored, but "awesome at everything" is the sort of build that gets played out in more traditional optimization settings. There isn't a whole lot of fun to be had there.
I have some ideas for some of the other requests, they'll get posted once they're slightly more fleshed out.