If your only complaint about 10/25 is that 10 man gets rid of the spacing issues, you need to learn to not stand in the fire. Other than not standing in the fire (and having to watch range check a little closer on certain fights?) the modes can be tuned very closely in difficulty.
In 25 man, you have more resources (dps/tanks/heals), but have to watch your positioning a little more. In 10 man you have less resources, but have slightly more range of movement (you do still have to stay in range of boss/tanks/raid to dps/heal/etc).
If you're complaining about difficulty, then shut up and turn on hard modes. "Casuals" getting welfares doesn't diminish the difficulty for you. If raid content was still designed for the 1%, almost everyone in this thread would be part of the 99%. That means no progression raiding for you, which means that almost everyone in this thread would still be in Naxx or Uld while the world's best were downing LK right now.
You're being ALLOWED to participate in the current content. Without these policies in place, you would be the "casual" or "bad." If you want content that less than 10% of the population will down, turn on hard modes. If you can't do EVERY hard mode flawlessly, without the 15% buffs, then shut up and improve yourself before you start whining about casuals.