Yes I couldn't agree more, Air Transat takes my first place for inadequate room. I had to take them to Mexico several times to get the package I wanted, barely survived those 6hr lights.
 The worst Air Transat flight I had was a few years ago, from London to Vancouver, when they substituted their very base plane for the better one we were booked on. The seat backs were vertical and I had to remove everything from the forward seat back pocket to get my legs in place, hard against the forward seat back.  A very horrible flight, only enough leg room for about 5ft 7in or less passengers. During the flight the isles were filled with passengers standing up to survive.