I'm sure there are plenty of corner cases that will lead to absurd results, but let me know if this is overall worth improving or not. Thanks!
It's a good idea. I think technical founders are probably a little underrated in your model.
Otherwise, I don't know if equity calculators are a great solution in general. They just tend to shift the problem from the importance startuppers give to different topics to the importance a program gives to these topics. On top of that, discussing non-round amounts >10% (such as 19%, 23%, etc.) just gives much too much importance to a few %, which paradoxically makes discussions tougher down the road. Better to round things up (70/20/10, 60/40) and just leave things at that.
That's not my experience at all. Almost all the pitches that I've been involved with (either giving, hearing, or advising) have had 2 people trading back and forth with the dialog.
And contacting, setting up meetings, etc is often more than one person.
Just my $0.02.