I have a setup using a NVidia TwinView graphics card together with a Matrox DualHead2Go splitter. This allows me to combine three UXGA monitors as a single Display without any further configuration in X-Org (except the twin-View part). The windowmanager just sees one big Display (fully accelerated), and you can do everything with ist that you can do on a single display, in the same way. That said, there is an ATI project called Eyefinity in the making that will support up to six monitors natvely, however that is not yet available.

and will include support for features like 32 levels of network traffic prioritization

...a fixed number of levels means a badly designed program. Or else it would not put any limitations on the number of levels.

This is not always true. Consider a real time system. If you want to guarantee response times with bounded computational power, you cannot handle an arbitrary number of priorities. Instead, the number might depend on the available timespan and the worst case execution time of your computation. If you combine this with the creation of a protocol, it might very well make sense to reserve a fixed number of bits for the priority designator. This even can help increasing the number of levels or decrease QOS-associated overhead.

Now, it may very well make sense to code the resulting values of such a constraint based design into constants. If you get into the situation that the specification boundaries change (faster minimum hardware for example), you can derive a new set of parameters, change the constants and the eventual piece of code accordingly and distribute the new firmware.

In the end, reconfigurability is only one of the properties in the equation.