I hadn't seen this proposal before but that actually makes a lot of sense and would probably help out quite a bit.

There are concerns with logistics and security when it comes to electronically submitted votes for elections (i.e. e-voting) but this sort of a solution side steps any concerns like that, heck it could be voting by show of hands over a video chat.

I do disagree with the gerrymandering portion though, I think the US really needs to adopt a proportional representation system (I'm partial to MMP) which would just make any attempt at gerrymandering irrelevant, sure you can win a particular seat if you gerrymander, but the amount you can effect overall representation would be quite minimal.