Solution 1: I haven't tried this and have always used one control for each motor. I guess if you had enough amp capacity from the esc you could do it, but I have also been told not to.

Solution 2: The reason you have to remove the power wire is so you don't provide too much power to the receiver. Each esc will provide about 5 volts to the receiver, so as you add escs to the system you also double the voltage each time you add one. I just use 6" sero extensions and cut the red wire that way I don't have to cut the wire on the esc.

Jeff