Since kobolds have evolved from being little dog men on the goblinoid "growth track" (kobolds, goblins, hobgoblins, bugbears, etc) to having draconic origins ... should kobolds be color-coded? Perhaps competing tribes of kobolds with different draconic patrons...
I'm suddenly having this vision...
Are dragons different species? Are we sure? Maybe they've been selectively bred (or engineered) like domestic dogs, which begs the question by whom ... see also Pern.
I pulled that trick on my PCs with a wight wolf once. It was fun -- but you can only pull it off once.
Had to go to a dracolich for my undead dragon trick later in the campaign.
It's pretty convenient that their abilities, alignment, likelihood of speaking and using magic, and danger level is all conveniently color-coded like a threat condition chart.
What are the in-world and metagame reasons? How would the game change if the bag of Skittles that are dragons didn't...
I ran a great campaign set in Mistledale that ran up and down the Dalelands, plus above and below (using an inverted version of Monte Cooks Banewarrens and City of the Spider Queen).
Along those lines, I'll just drop this here for fun:
Sacred cows make the best eating.
Sure, it probably isn't Dungeons & Dragons anymore, but Warrens & Wyrms can get by just fine with modifiers and level consistency. And maybe a wound-condition track and armor as damage reduction, and ...
Now that I see this I'm surprised it hasn't happened before -- particularly with modern board game and miniatures games using character "dashboards" fairly regularly. Add ability, spell, and item cards and you have a more tactile and easy to organize game.
None of your tinkers, smurfs, or Keebler elves around here, sir. This is a serious place.
Players who want to play short characters will be assigned Kender.