the only area where I can see this as being a problem is with Excel. For the others, use a web-authoring tool. Why create a MB document in Word, to attach to a SharePoint page, then send a link to every pointing out the new document? Excel has some specialized math functions (and data presentation abilities) that are beyond LO/OO. But I think it's such a small percentage of people that need that functionality, you could replace MSO w/ LO/OO and most everyone would say 'meh' and go back to work.