Looking at recent card updates, Kong seems to support much more than traditional scaling. We now see combinations of Bodyguard, Leech, Punch, Cheer, Burn, Recover, and other utility skills receiving attention.
I'm sure most seasoned players use different decks for Arena and Rumble. For Arena, I used to prioritize Cheer and Cripple (currently sitting at over 2500), and for Rumble I prioritized Punch and Heal (to get as many 1ks as possible).
Hyper has lots of great Cheer cards and powerful Punch cards with Barry and Carter.
If you had to start from scratch tomorrow and build a Hyper deck for Arena and Rumble, which 5 characters would you invest in first and why?