Right now things might not work gear-wise towards your advantage, but there's going to be new gear coming with every content pack, and maybe something pops up that you want/need, and thus begins the tetris again, so gear that might not have been attractive in this moment becomes so because it now fits in with your new gear set. But yea, this isn't such a huge jump that you need to redo your entire gear-sets right this minute.
Some people will scramble to have the latest shiny thing, and that's good on them. Looking at some of this gear, some of it is nice and due to the flexibility of the sun/moon augment system I might swap a thing here or there, so my gear becomes a combination of 34/36, but I don't intend to make it all 36 right this moment.
Maybe next year with another content pack and another expansion it'll make sense to change more out, or maybe when the raid drops there will be something you want that might make you alter you sets, but otherwise, unless you need to squeeze every last bit of DC, DPS, damage mitigation or what-have-you out of your toon, you'll be fine for the time being.