+1 for this feature.
In the meantime one can have a batch file that would reassign associations on any machine. The downside is that when you leave, your associations stay.
This is what I use to associate things to vim:
assoc .c=code
assoc .pl=code
assoc .rb=code
assoc .py=code
assoc .as=code
assoc .r=code
assoc .m=code
assoc .ahk=code
assoc .vim=code
ftype code="e:\jose\usbstick\TC UP\PLUGINS\Tools\Vim\vim72\gvim.exe" --remote-tab-silent "%1"
