Daws are toys and tools also.
I find Reason has a spectacular audio engine and has been marred only by it's core effects. Don't get me wrong- I love them, the sound mangling ones esp- but many of them are long in the tooth.
So I think ReRacks is going to be awesome. I see the Softube Trident in one of the screenshots. It will not be cheap but we Reason users will have the option now of top bracket effects without Rewiring into a master host. Bring it on.
And maybe for those people strangely obsessed with Video support within a DAW some ReRack may offer it.