I've felt for a long time that any application that is targeting businesses as customers would be much better off spending resources on good spreadsheet import/

I've felt for a long time that any application that is targeting businesses as customers would be much better off spending resources on good spreadsheet import/export workflows than on their gui. If you look at your gui and see a grid, basically of any kind, you probably are looking at a point where your customers would prefer to interact with a spreadsheet than your software.