Kenrith shines because all of his abilities are useful, and some are invaluable
It's not impossible some Affinity-style artifact deck develops in Standardthere are a lot of good artifact support pieces from The Brothers' War and Invasion of Kaladesh could be a part of it, although I would expect it to be more of a role player than a foundation of the deck, if it even makes the cut at all
It's easy to think of them as 'the rest', meaning anything that doesn't fall neatly into Control or Aggro, but this is not quite accurate
Each time it uses Pay Day, you get to deal ten damage and draw a card
If you want more structured matchmaking, many players use Discord communities that run organized queues and power tiers
Its an extra layer of protection, in case you ever move or if (at a terrible time) you ever get thieves