I've played RtToEE a couple years ago and the DM allowed the splats. They were mostly unused, although those who used them, mainly one of the wizards and a archery based fighter were really min/maxed. I played a ranger for most part and I couldn't find much use for Master of the Wild, but I haven't really read them to a point I could have an opinion. I gave a look in the Complete Divine and I wasn't impressed. Problem is Wizards don't impress me anymore with countless new feats and prestige classes, especially because most of them fall apart when you get in the details.
Did anybody made a comparative review of the old and new splats?