I don't have any personal experience with them but you might want to look at or maybe talk to Flatout suspension. I believe they have some setups that raise the ride height and they claim are still streetable.
Generally speaking though I'd think a gravel rally setup would be bouncy on the street. You're probably more likely to find info / personal experience if you search around on some of the Impreza rally forums though.
Thanks, checked out Flatout, a little pricey but likely worth it, and that's kind of what I was looking for; mostly wanted to know if it would be feasible or at least realistic to run gravel spec suspension on a daily driver. I will probably follow up with them further.