stevenz: Even if you "only" have DVI, some sets (such as the Samsung unit in front of me) will have a HDMI port which will have a matched 3.5mm or 2xRCA input for the audio so you can run a DVI->HDMI cable for video and analog cable for audio.
It's about time monitor manufacturers stopped supporting VGA\RGB\D-SUB connectors as well. Ditching the usually sub-par analogue\digital conversion hardware required for the support of it is a good thing for all involved.
HDMI + CEC = much simpler setup and as mentioned above, much higher WAF.
That's a lot of people with legacy equipment who would look for another brand if you managed to persuade some one. There's still a lot of old kit around that is perfectly servicable (satellite decoders, PS2 consoles, Wii consoles ...... heck I even know a couple of people who still make use of VCRs). What's the big problem you have with manufacturers including some connectors for legacy kit?