This portion of the forum is not for requesting ports. In fact we specifically ask that requests for ports not be made to us in general. Instead, find communities of people who own the player, and encourage them to take up the effort in improving them.
Ports are a lot of work, and honestly depend on a genuine love for the hardware. A person is more likely to be able to gain a knowledge and interest in programming to make something they love better, than to invest in a device they're not particularly interested in and spend a significant amount of time working on it when they've already got devices they're more interested in, and most people currently working on Rockbox already have a piece of hardware, or several, that they're trying to improve.