I agree that one can use SBS 2011 Standard for quite a long time, say out to 2015 or so. Why not?.
As for the list that Sandeep made (thanks), I think adding the two most important things, Exchange and SharePoint 2010 will make it exactly like SBS albeit more expensive. This is for 2012. Of course, there is the retro look. If you do add SharePoint, you may wish to consider having an expert doing it as what I have read is it is easy to install at the end, but a bit tricky at the beginning.
I do think we tend to start talking about things and they take on a life of their own. I am not so sure that a Terminal Server would be necessary for most practices unless multiple users need to access AC on one computer and Windows apps. RDC should work just fine.
