Note that import/export is not yet available. There's a manual way, I'll explain on demand for now.

Feature is completed. Awaiting publish for live servers

This is coming along pretty well...

For this feature I actually implemented new profile tooltips.

This filter, where do you imagine it? This feature is going to appear regardless of whether you're in a match or not. As soon as you join a party, the DotaPlus window will change to reflect this party and show stats.