I feel like he will still be viable on some maps, he'll for sure be more niche just like the other sentinels. There's still room to go for opening picks and get out, you just have to use slightly more utility to set him up and get him out of harms way. Plus his Ult is still a "free" OP, so it's viable. He'll still be used on maps like Haven, Ascent and Split if that comes back into the pool. I think people underestimate the ability to just TP out through a wall regardless of how far the range is.