There are some important features missing in the data viewer, one of the most used tool of data analysis.
In horizontal scrolling a big table with lots of column (it's very common to have more columns than one screen can fit), it will be very helpful to fix the row name column so that it's always visible(i.e. always keep it within screen with scrolling). This has been asked before:
In same direction, sometimes we also want to fix certain columns so that it remains visible when scrolled horizontally. The row name column is just a special case of this request.