TH- Is a GoW Spinoff, based on Tyri. Whenever I play a TH I put myself in the mindset of that character and enjoy it for what it is, a diversion to earn some loot which I can then use to level up my cards. There is the game mechanic tie-in.
Arena- Is the ultimate mode for serious strategy players. And if truth be told, my favorite game mode, but I literally NEVER play it anymore. This is where personal collections and power is thrown away (except for HERO) and players are put on EQUAL footing to build a synergy team AS THEY GO! It is a MtG Booster Draw in GoW. It’s brilliant! It’s just not worth my, or any end gamers time. ROI is horrific compared to spamming PVP. And when you consider that at end-game this is more of a resource collection game than a puzzle game, then ROI is the #1 mitigating factor in determining where a payer should spend their most valuable asset, TIME.
That is why I would love to see an update to Arena that added some sort of structure, perhaps unlocked at lvl 1000 that allowed for a ROI that is comparable to PVP. Since that is the bar to which all modes will be compared by end-gamers. I would scale up the cards to full 20 lvls, fully traited, and make them an Epic, a Legendary, and One Mythic, selected in THAT order. This way you are building from the ground up, just like Arena now. Hero would of course be final slot and you would be able to modify weapon as always to fit the team synergy. But again the final piece of this glorious puzzle, pray pardon the pun, is that the REWARDS would have to be worthy of the time invested. It would need to grant more than 30 seals, offer significant gold, I would love to see trophies awarded for dominance in this mode, and of course, winning all 8 matches would have to come with a prize in either Gems, or Diamonds to really draw the end-gamers in.