Hi Adam. The KN-Q7A is a very good rig indeed, no doubt about that. If you are designing a receiver from scratch on 40m, then 7.000 through to 7.150 at least is a must, because Parks on the Air, SOTA, and other portable operations use 7.140 through to .150. And - AND, then there is the CW qrp operations at the lower end of the band. The LED tuning is ok, and gets around a problem, but a small LCD display smaller that the usual 16x2 would be a real advantage.
Just my thoughts. Keep up the good work