Once out, Mendicants power is equal to the number of artifacts you control, which can quickly spiral out of control with the number of artifacts you can easily generate, especially Treasure tokens
You can't count on the Archangel actually connecting with lifelink through combat as she's one of the only targets for the removal spells your opponent has had in their hand all game
They're threats that will end games, especially when they're your commanders
The next obvious twist is to create Lord enchantments that allow the person who plays the spell to choose which creature type they want to affect: The reason the customizable Lord enchantments are so popular with the designers is that they fit into numerous race decks
This essentially gives you a lot more freedom and depth to what's possible with the mechanic
It's kind of like when you go to a party and you're not sure who's gonna be thereyou know the host through a friend of a friend, and you've hit it off great, but you're not really sure which of their friends are also your friends, and what if their friends are weirdos who like things like lava luging and competitive corn shuckingbut it turns out that their friends are all people you like or really cool people who like awesome things like regular luging and competitive corn eating