The pathfinders are baller, the extra vision is great and recon planes/arty are always useful.
The only thing I don't like is pathfinder arty call in is insanely expensive. Should be more like 80 munis.
Yeah, I like those things too and I have fun with the doctrine when I play with friends but I don't think I could justifying picking it over another doctrine if I were trying my hardest to win. I like what Cruzz did to the commander in his mod. Nerfed canister, buffed the main gun, removed the AT gun from the para drop and made it 700mp with a 33% chance of getting each upgrade instead of the 66% for zooks that it is now. Commander feels so much more rounded.
Edit: oh and I think he gave the I&R pathfinders one sniper rifle like the regular pathfinders have.