Please make a standalone (not connected to the internet) desktop version of studio or drop the desktop version totally.
A standalone version that still needs to be connected to the internet has few benefits over an online version that does not need ~850 Mbytes of files loading on to a PC.
You need to be connected to the internet to log in (for security reasons in order to access your private data) and also to download any new/updated libraries. Apart from that it works offline. We even ship a cache of Mbed Studio so you only need to be connected the first time you use the program in order to log in.