I'd argue that an autoland in marginal CAT I is a very bad idea indeed. As has been shown by a 777 from singapore airlines in munich some time ago. No protected areas, no increased separation and not enough visibility to judge whats going on at the other end of the runway...
And yes, we do CAT I autolands from both sides, but that is for training purposes, usually in much better than CAT I conditions.
Quite honestly, there is no real need for a single AP autoland, except in those very rare cases where the second AP is U/S.