Vortex has a maximum range, so you can stay out of the range and never be pulled in. You can also stop it with corners or other impassable objects, and I haven't been pulled all the way to the boss every time, so there's something that affects the distance of the effect itself, or it's shorter than the range the elite can use it at.
It's not completely unavoidable. For a melee it sucks of course, but shouldn't a melee be able to stay in melee anyway?
As for jailer being unavoidable... Would you really be a lot happier if jailer was RNG, based on for example some resistance or something? Wouldn't people then just be crying how it's RNG and how it sucks? Also, don't every class have an ability they use to get out of jails? You'll just have to save the invulnerability for jails, and if you need it before that, then upgrade your gear.
Fact is, it's not meant to be easy to kill elites in the later acts of inferno. They never intended for that. In fact they never ever said anywhere that they intended inferno - any parts of it, let alone acts 3 and 4 - to be farmed. The only times they've referred to inferno have been discussions about how hard it will be to progress through it, and finally kill Diablo.
I doubt you've got 100% perfect gear yet. By 100% perfect I mean 6 affix items with each affix at it's maximum. I doubt you're even at like 80%. This means there's plenty of upgrading to do still. We're a couple months into the game. That's nothing. People had crap in D2 after two months, but D2 was so ridiculously easy you could faceroll it with crap.
I don't like dying either but that's why I stick to act 1. There's absolutely no reason or point whatsoever to be farming acts 2-4, especially if it means dying repeatedly, when in act 1 you don't die ever.