Last year this track required power, great traction and a pretty decent amount of downforce.
Don't see any reason why it won't be Ferrari and Red Bull at the front again. I imagine Mercedes will still be in no man's land for the moment.
I think it will give a better understanding of the midfield though. I'm interested to see how Alfa/Haas/AT/Alpine shake out.
If McLaren/Williams/AM don't bring any significant changes I don't expect too much change even though the track layout is far different than Bahrain.