For me it'll boil down to the loot mechanics. If they are grind to win, heavily monetized garbage...I'm out. If it's reasonable, I'll probably play for sure.
Yeah if there's anything like "unlock an epic rarity item you picked up in 3 hours, or used (premium) gems to unlock it now" then I doubt I'll play this for more than an hour.
Sadly that's exactly the kind of thing I'm expecting (and hoping to be wrong about!).
I just can't think of how they could monetize this and keep me interested.
-Make it a premium app? I'd like that but it would probably sell poorly.
-Ads? Might be OK, just put an unobtrusive ad banner in the character menu and video ads between levels and I could live with that.
-Optional IAP's? Stuff like color changes, costumes, item transmogrification, maybe even functional things like bigger storage capacity I could see being charged for if they are cheap enough (or purchasable in-game without requiring excessive grinding).
I personally don't mind Plants vs. Zombies 2's F2P methods even though it does have a lot of IAP's.
The levels are all beatable without using consumable powers (which are also buy able with in-game earnable money) or premium plants. There are a lot of hard levels probably to incenticize you to spend money, but still all doable free.
And there's some functionality upgrades that are IAP (like an extra plant slot, bigger power slots, etc), but nothing required to beef all the levels or ruin the experience without them.
The game also got a ton of free updates that added a lot of new worlds, more free (and more premium) plants to use, and new functionality like multiplayer and an upgrade system (that didnt manage to break the game thankfully). So I actually felt good about spending a little money in the game instead of feeling FORCED to do it to have a less sucky time.
Path of Exile is F2P and people like that game alot, right?
Maybe Blizzard can just copy that game's F2P mechanics and make a game people will love to play.
Again, I'm expecting the worst from this, but there's still a small possibility that they could manage to pull this off.