i don't think the axe-fx IR's are any better than the eleven rack. seems like all IR's need some type of high cut. why? because the IR is made by close micing the cab. have you ever put your ear in front of your cabinet even at low volume? tons of highs. so if you roll off some highs, you are there. i also find a lot of the better sounding IR's have too much low end. it's crazy, if a cab IR has the right amount of highs, then the lows seems obsessive.
I totally agree with you, when I switch from "Rig output no cab" to "Rig Output" I also enable a parametric eq on each patch to remove highs and lows. I don't understand why Chris didn't take a far-field mic instead of close-field when creating IR, it would have made the 11R totally awesome out-of-the-box and would have also recreated the amp-in-the-room feeling.
i think that adding IR's to the eleven rack would only turn it into a Pandora's box...much like the axe-fx. it took me a couple years to work with the existing cabs on the eleven rack and get good tone. in contrast, i'm still not at the same level of confidence with the axe-fx. just too many IR's to choose from; and not all IR's sound good with all amps.
The main reason I decided to get 11R was because of the simplicity of using it, and mainly from the front panel. I didn't want to tweak hundreds of parameters hidden under tens of menus to have a good sound. The UI on 11R is fantastic in reproducing a real amp/pedals knobs fealing.
what we have in the eleven rack is good enough to get just about any tone imaginable....which i've done with the Singtall Superpack. and not only myself, but countless others have made such a wide variety of presets using only the humble tools the eleven rack provides.
Humble but of high quality!