I was just thinking it would be cool to have such kind of application
basically, this is like the IOS61/Shop installer with System menu/IOS60 added
what could be even cooler would be to have a menu with the ability to list ALL the stuff that can be downloaded from NUS servers (system menu, channels & IOS) , to download them and to apply (patchmii style) any kind of available patches: IOS patches (to allow the signature back again, read from DVD-R, access File System, remove version check, etc...) but also System Menu patches (to re-allow TP hack,etc)
this way you could basically setup your Wii as you want to and keep your system up-to-date... maybe with some pre-configured setup for less advanced users
off course, this would require advanced hackers to analyse the System Menu has they are released (as well as newer IOS versions that could use unknown methods) to find what and where to apply patches