2014 Jeep Unlimited Rubicon

I traded in my 2010 2-door Rubicon for a 2014 4-door Unlimited Rubicon. The 2010 was a good vehicle but it had a few minor drawbacks that I believe the newer model will address:

1. The 2010 was under-powered on the highway. In 2012 Jeep went with a bigger engine that made a significant improvement in performance. 
2. Although the 2-door has a backseat, it takes a bulimic contortionist to get in it. Now, I can carry up to four passengers in comfort.
3. The 2010 does not have a cabin air filter. Whenever I would follow other Jeeps off-road and then turn on the air conditioner, the interior of the cabin would fill up with a fine dust (I like driving on dirt, not breathing it). The newer Jeeps have a filter just behind the glove compartment.
4. The 4-door will tow up to 3,500 pounds versus 2,000 pounds for the 2-door. I may be buying a small RV trailer which would require the larger towing capacity.