Add new "level of site restriction" drop down to Fluid SSB creation options.

When I create new SSB's I use a variety of preferences for letting them browse out to different URLs, from really quite restrictive, to cruising around the top level of the site (so *getsatisfaction.com/* for example, so I can log in via the SSB too), to go anywhere (for example in gReader so I can read the links I want to in more detail.

Currently I have to create the SSB and then change the preferences. I appreciate for fussy ones that's always going to be the case, but would it be possible to have at least these three options in a drop down so we can choose between fully restricted, restricted to top level, not at all restricted at the time we create it, with the right to change that in preferences later as we currently have.