If my previous WoW experience is anything to go by, War Mode will consist of exclusively the following:
1. Rogues and feral druids sneaking up on you when you are @10% HP and then repeatedly corpse camping you.
2. Rogues stealthing away and stalking you.
3. People going around in gank teams and ganging up on you 5v1 at best 10v1 at worst.
4. People making 40 man raids to do the achievements in one go and never go back to War Mode again.
If you still want to get ganked by rogues, get the following items:
1. Falling Flame from Timeless Isle for quick getaways.
2. Potion of Deepholm for even quicker getaways.
3. Darkmoon Cannon for slow getaways.
4. Honeycomb from Shadowmoon Valley to heal yourself (can crit for around 70% of your HP).
5. Free Action Points to remove stuns.
Also make your own group for protection.
Until Blizzard admits that there is a problem with rogues and stealth in general, War Mode will be miserable because 99% of it will be wonderful 1shots when you are fighting 10 mobs. There needs to be an active defensive ability that you can use while getting stunned or a reduction in rogue damage. High damage + stuns = not fun for anyone except rogues.
Rogues have the perfect toolkit for harassing people. Your toolkit just got pruned. Don't expect to go solo into War Mode and have fun.