Thada Adel was pretty swingy. Out early, she was great; poking people for their Sol Rings and then grabbing other goodies. Unfortunately, out late where there plenty of blockers in the sky, she might not have had an easy target. Hitting people for their Sol Rings late game or whatever random Artifacts they tended to have was less than excellent. There was also the issue of her double Blue occasionally making me unable to cast her on curve. Krenko comes in because even if he is blocked, he makes an army in a can. These gobbos can either live on the ground or get kitted up with random gear to swing in. There have been times where I tried to race but got outswarmed. With the Goblins being 1/1s, that also makes them excellent Skullclamp fodder plus recursion with Trading Post.
I am very greedy. I've got to actively design my decks around my stupidity. Unfortunately, Capsize has Buyback which is what made me fall in love but a six mana bounce spell isn't a realistic option. There was talks on the EDH subreddit a few days ago about how the format has gotten leaner and meaner, some of the best staples from five years ago have fallen by the wayside and Capsize's name came up. I realized that's true, it's not that strong when you can pay one more mana for a Cyclonic Rift. I thought of Into the Roil as a quick tempo card that will hit my opponents hard but then I remembered put down my Vial Smasher the Fierce and Kraum, Ludevic's Opus deck, freeing up my Force. Nothing like pantsing someone when they thought you were tapped out.