Re: "If they had included 16 bit support in 64 bit"
The applications were written in a big selling database compiler and the best database for it used native DOS IPX, there was no IP layer in DOS.
It used NETBIOS to talk to a Windows IP interlayer to talk to the server with IP, this worked perfectly with 2000 and XP, 98 we used IPX as 99% of the servers then were NETWARE.
MSes aggresive attack on Novell caused all customers to go Windows server, and MSes depreciation of IPX forced the tool we used.
Search for ADSDOSIP and Windows 7.
And the server engine can work with all Windows languages I have come across, so at least data is safe.
The graphics mode though this was games mainly, I remember Wolf3D.
As to AMD removing 16 bit support, why not leave in for Intel and let them use it as an advertising feature. It would be nice to allow my home PC to run my favourite text editor in 7 (64) as well as XP (32).
Mind you I raised a laugh today when a customer asked us to check the specification for a server and I said my 10 year old XP PC is more than twice as powerful.