I understand the profit part.
At my previous job we had to order Mac minis because the IT director didn't want all-in-one machines. He didn't want to loose an entire machine because it had to be sent back home whole. We were still using Power Mac G4s too.
Dual core Mac minis were screamers for Word and FileMaker.
I've noticed an increase in low-profile GPUs and other expansion cards lately. Dell and HP must be selling enough slim SFF desktops to create a market for all that.
You've mentioned the point of sale upgrades before but I have my doubts. That's just me though. Don't take it too hard.
The Mac Mini is now a compelling worker bee machine because of the size and price. Any of them will run Office 2008 and Filemaker really well now, and for $600 it's not bad.