Title. They can be rotated and picked up like normal furniture. You can also change their names, what weapon they hold (Can only pick out of the 5* cobalt weapons and weapons donated into the treasury), their text, and the player's response. You can also make them patrol a certain amount of tiles. Every time you walk past by them, they'll salute and maybe say "Hail, ." or "Hail, . Happy Winterfest!" during the Winterfest.
Don't like his armor?? You can give them any other gear by donating it in the treasury and editing his inventory. The warden gear is then put into the treasury meaning you won't be able to equip it. Perhaps it will be available as a reskinned Azure Guardian in the Featured. Hmm.
I guess you could buy one Warden for 140kcr.
If you can customize every aspect of him then this idea is just mannequins again.
There are a bunch of those ideas buried deep in the forums.