This is the second build of MIUI.us for the Kindle Fire and it is getting better. I am aware that the Phone shows up and you can simply hide that away in a folder for now. It's part of the contacts and requires resigning things to get it to play nice with the system. Right now I am more interested in getting the major stuff worked out and then fine tune the minor things.
Please make sure to follow the instructions in the OP regarding the density issue. This has worked for me thus far and I highly recommend you do it too. MIUI does not like the native 160 dpi setting of our device and there are a few apps that will FC and some layouts just will not look right. Hopefully I can get time to come up with an elaborate way to make it work with our DPI or if we are lucky, miui.com will put some effort into their ROM for tablets.
FYI: The navigation bar height in the MIUI.us Toolbox is currently not implemented in the framework and MiuiSystemUI so you won't see any changes when playing with that. I left it in by mistake but it's there now so I just wanted to give you a heads up before people start complaining about it, although I'm sure with this being the 3rd post in the thread it will probably be overlooked