What I wrote in the reboot/remake thread in TV & Media...
It's weird, my instinctive reaction was "Oh no he'll make it silly." and then my slightly more considered reaction a minute or so later was "Oh cool he'll make it silly"
I love the movie Dredd, it's a five star film for me, but it does lack the surreal and comedic elements of Mega City One. I've joked many times that if you popped 90% of Dredd and 10% of Stallone's Judge Dredd in a blender you'd have the perfect Dredd film (The 95 film does have a more comic accurate vision of the city, even if it's pretty awful beyond this)
I tend to fluctuate on Waititi a little. I've truly loved some of his films (more people need to see Hunt for the Wilderpeople) but I've found him a little insufferable at times in recent years, but he had can balance the grim and ridiculous halves of Mega City One this could really be something.
I wonder if a lot depends on how well the Rogue Trooper film does, and I also wonder if there's any chance of Urban and Thirlby returning? (unlikely but hope springs eternal)