I agree with the OP.
I brought this up on the Pathfinder forums a while ago, but it seems to be changing more 3.5 rules than it really needs to.
One of Pathfinder's stated goals is that it wants to fix the biggest trouble spots with 3.5E. Okay, so grapple gets revised, and so do polymorphing spells - pretty much everyone agrees those need an overhaul. Maybe consolidating the Spot/Listen and Hide/Move Silently skills too.
Everything beyond that strikes me as going too far, though. Beyond that handful of changes, everyone seems to have a differing opinion about what should be changed, mostly to suit their own personal vision. The Pathfinder forums are filled with people suggesting this or that change, and largely drowning out the people who want a more moderate open playtesting. It's why I stopped posting there.
Pathfinder's other stated goal is to remain easily compatible with 3.5. But every single change it makes to the rules takes it a small step away from that goal. As it is now, Pathfinder seems like it'll be at least as different from 3.5 (if not more different) than 3.5 was from 3.0; and that was a change that required quite a bit of redefinition of terms. It's my hope that the Paizo guys will walk back some of the changes we see in the Alpha 3 rules. I wonder if listening to so many people screaming for more and more changes on their forums are perhaps pushing them too far.
There seems to only be a consideration of how easy it will be to convert 3.5 material to Pathfinder. I think that's a bit too PF-centric. People won't be converting their material to Pathfinder, they'll be converting Pathfinder to run in their existing 3.5 game. And if the game is too different to allow for an on-the-fly conversion right at the game table, Pathfinder will have failed in its goal of 3.5 compatibility.