I think a lot of them are great, but once you have a top tier exotic like gjallerhorn/IB/Hawkmoon, you don't really need to use other ones. I think the emphasis is on the player to find new and interesting ways to use the exotics that they have. I'm really looking forward to using bad juju on my warlock once I level it. I think I'm going to have a raid/NF/weekly loadout that I use exclusively for that, but keep in the vault when I do bounties or ROC. Need to keep things fresh, since I've used my IB so much.
I agree on some parts, but ultimately efficiency will trump creativity. All exotics should have perks that are just not available anywhere else and they should also be very good. There are exotics that are completely useless right now. Universal Remote and No Land Beyond spring to mind first.