Returning to warmane !!?

Hey guys.
Most of you won't care. and i could find out by searching forums and google . but i am a lazy guy and this way is easy and still wanted to know.
I used to play on Icecrown back then but left due to RL **** and other dumb things.
Thinking of returning to warmane wow after a couple year break. Anything new other than " Frostmourne" ?
Is it still one sided arenas and no Holy priests in ICC raids ?
Any new things i should look our for ? should i start on the new server or still go to icecrown server ?

There are some holy priests in icc, maybe disci is more common, but still.

One sided arena? Well, this patch tends to like plate users a littl bit more, but other classes are totally fine. I doubt You are talking about high mmr anyway.

If You left just a few years ago, like 2-3, dont except any huge changes - just some bug fixes etc etc

You can play frostmourne, do some progress and in the end Your char will be transfered to icecrown after ~1 year or just start on icecrown with bilions of full geared ppl, up to You.

Holy Priests are actually more common now but they are hard so you can se some really good once but mostly bad once.
We have cross realm battlegrounds now, bracket systems that seperates high geared to low geared people in BG's (not 100% but it's better)
We have Mercenary Mode which can put Alliance players on Horde teams in BG's if the queue on alliance is too high (can be turned off)
We have Transmog system that can be turned off and on from your account panel, depends if you wanna se people with or without it.
A lot of class changes (fixes) which drasticly changed the damage output some classes used to have, for example Hunters do much less dmg then they used to.
Ninja looting rules so you can report players with printscreens and get them banned.

I cant say for sure but it feels like Icecrown has a lot more newer players and fewer "Elitists" on later days.

Thank you.. That gave me more information.. I have been playing HolyP for some time on classic and warmane.. so i find it enjoyable..