Whoops as I read this over I realized you were asking about the implicit labkey.data frame in an R view. You can use Rlabkey in an R view; it will utilize the security context of the logged in user.

I'm concerned that if we change the behavior of the implicit labkey.data we will break existing apps. Would the following work as well for you:

library(Rlabkey) make this implicit?
labkey.session built-in automatic current session,
labkey.query built in query object of current rows in the grid

then you could do

mydata <- getRows(labkey.session, labkey.query)

and mydata would have no factors.