Does your 3-channel unit sell for less....no, it got discontinued...
If your argument holds water, why isn't that offered for 20% less?
Nobody wants you to kill your 4-channel unit....just expand your product line.
I get the real reason is pins.
Can't change CPU's easily to get more.
Other arguments seem to be just rationalizing the lack of pins.
Was hoping your CPU would go EOL and you would end up with a more capable unit...with another pin or two.
Stealing a channel for airstarts make the airframe less safe since I now give up a redundant charge on the main and/or drogue.
Adding more CPU's (Altimeters) to the mix is plain wrong -- don't want two independant, un-cordinated decisions about burnout or other critical flight events. Want ONE computer in charge of the flight.
Sorry you fail to see the utility.