I would have liked to have seen a couple DVI/HDMI ports on it as well,
Sadly, that seems to be a limitation of Thunderbolt: only one display device per peripheral - and that
includes driving a legacy device through the Thunderbolt-out socket.
So they could put DVI/HDMI on, like Matrox did with their dock, but then you wouldn't be able to hang a DisplayPort monitor off the TB-out socket (the Matrox dock doesn't have TB-out).
It wouldn't be so bad if they could make it switchable between HDMI/DVI and DisplayPort-via-Thunderbolt - you couldn't run two legacy monitors at once but you could plug in one Apple TB display and one legacy monitor. You could also use a cheapskate TB device that didn't daisy chain without losing your display output. However, since both Matrox and Belkin have barfed on that I guess it isn't easy.
If it were possible, it would be better to provide a second Mini DisplayPort since there are affordable adapters from that to HDMI, DVI, full DisplayPort and VGA.
That aside, they should offer a BluRay
writer version (If you're spending $400 on a dock why pinch pennies?) and a no-optical version that could take a second 2.5" HD in the optical slot.