pogre
Legend
But that is because Trailblazer was not hemmed in by a backward compatibility requirement which Paizo gave themselves for PF. Paizo wanted to tweak not redesign. Now one can, of course, argue how well they accomplished this, but I don't think it's fair to accuse them of a lack of design innovation when they were explicitly not trying to stray too far from 3.5.
I'm not attacking Paizo, but backward compatible was a goal of Trailblazer:
Trailblazer page 1:
Design Philosophy
When we set out to create the Trailblazer ruleset, we agreed to a strictly define our design process up front. We knew we wanted to stay backwards-compatible with the enormous library of 3e products;
I'm certainly biased, but I think Trailblazer accomplished this goal.
As to the original question - we jumped into 4e head first. Our group was playtesters and I ran a 4e campaign for a number of months. After giving it every chance, we decided it was not our cup of tea. We then moved onto one of my favorite games WFRP.
However, the D&D itch was calling again and I was considering going back to 3.5. Our most satisfying D&D campaigns had been core 3.5. I was still concerned with problems with 3.5, so one of my players loaned me his Pathfinder book. It did not address my concerns - it seemed like it threw the kitchen sink at the problems rather than streamlining.
Trailblazer matches my grittier style of D&D better and fixes almost every problem I had with 3.5 in a satisfactory way.