A number of things in Maya could use some updating. It's hardly an issue of being 'old' though--at least compared to the other programs. Max is just as old, older if you count 3d Studio maybe? Max could use some core updating too, it's just aged a little better. That, and when Autodesk bought Maya they apparently spent all…
If you think Maya is old, max has to be it's grampy. They are are both great, but yeah it's be nice for a fundemental update on packages wig hanged that reflect current methods of production, and even take it a step further to make it a lot more artist friendly.