Steve, good to learn you got the levels completed.
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As for me, I’m still working it to get my collection completed. & yes the game is still challenging enough to keep playing it even after completing all current challenge levels. If I ever feel the need to get my butt handed to me I’ll just hit up Twi on the last challenge. I still can’t beat that challenge without boosts & losing a handful of times in row.
_ It be good to see if one could do stacked-boosts when they open up the next area for play. I don’t feel I’d be able to beat the next level of character challenges without stacked-boosts. Unless they introduce higher powered playable characters than the current legendary characters.
Of course if they do that, I imagine they'd need to redo the current pc four levels of Common, Rare, Ultra-Rare & Legendary. To a five levels characters list. But I don’t see that happening. We’d more likely see the stacked-boosts than a complete rewrite of pc levels.
( PC: is “playable character/s” for the those that don’t know.)