Viable power Chrono or core mesmer builds for PVE post nerfs

Hey guy I’m pretty much a new player to the game and I’ve been playing for 2 months regularly. I was leveling with Gs/St core power mesmer and recently unlocked Chronomancer. Now I’ve been hearing/reading up that Chrono has been nerfed recently and is unplayable and/or too weak. Also most guides I looked up online are from before the February patch. I would appreciate it if some of my questions were cleared up.

1. Is chronomancer too weak for fractals and eventually raids going forward?
2. What are some viable power builds for fractals and open world? (I’m down to play core)
3. Are ranged greatsword builds too inferior to sword builds in terms of dps?

Cheers!