In order to include so many characters, they even printed 41 legendary creatures at Uncommon
Generally, your deck will want four to six board wipes on average
On the other hand, the current Mystery Booster pack EV is quite a lot higher than the actual cost of a given Mystery Booster pack
Another excellent point for Thoden is that it's easy to build human typal in commander
On the other hand, if the build is centered around artifacts, Etherium Sculptor makes things run smoother, and you can use some key combinations like Nevinyrral's Disk + Darksteel Forge to get a one-sided board wipe or rely on the Thopter Foundry + Sword of the Meek to outvalue your opponents
Now I may be talking down the importance of actually closing the game, but the reality is that it does add real percentage points to control decks