AFAIK, Blizzcon WoW tournament official banned macro keys and even the usage of add ons.
Even the Razer Naga MMO mouse that has a lot of buttons on left side for your thumbs to press also isn't allowed as well.
Oh you wanna talk about reliability, those keyboard that stated gaming i won't suggest people to go for it, most of the time i use confirm will hear the CPU making noises because i press a lot of keys together at once most of the time.

If you want a true working keyboard, you won't go wrong with a NKRO keyboard that most "gaming" keyboard doesn't offer.

Hello, Everdying, welcome to mechanical keyboard thread, i believe is it the first time you posted in here? erm.. maybe i already forgotten.
I believe most users here has already know that the price you paying for are the durability as well as reliability of the keyboard.

Mechanical keyboard, Cherry MX Switch, Each key has it's own specific steel springs, which will not stuck while in the process of double-jump/repeated press.(if what you mean is the switch stay at bottom and does not comes back up after pressed which mostly happens in membrane keyboard)
If you did see 1st post about how the Cherry MX Switch move/function while being press, i think you will get what i mean.

For pressing a key and only be detected like 1/2 second later. There are 2 possible problems in 2 area, either a bad keyboard controller, or pin has dust clog up which causing the connection of 2 pin and membrane to not work properly(please refer to Post 1, Membrane Keyboard Gif moveable switch picture).

for me, it is WASD, R , CTRL. i found out CTRL + R is very important to me, because i always crouch to reload in corner.

i cursed and toss my membrane keyboard few years back when i'm in a situation where i press hold CTRL + W + TAB and pressing R to reload and it did not register/work.   

I thought most FPS(CS, L4D and many more) are using Ctrl as default crouch? Jumping onto higher plaform in CS = crouch + jump.

any body check out cmstorm quick rapid fire yet? looks quite familiar.. or is that the standard approach nowadays