Dave

It was made to use in your daw of choice. The reverbs are so good, that the next logical step was a plugin. Just my opinion. Why can't the AX8\Axefx reverbs be as good. Pretty much what deathbyguitar said. Would take too much processing power. I am sure you have noticed how the reverb is the first thing that gets disabled if you add too many blocks. The first fix is almost always to lower the echo density. If that fails either remove a block or go with the spring reverb (which is what I do a lot and make up for it, when needed, with a delay or the multidelay.

HTH