Hello, I have recently been trying to make a Turing complete 4-BIT computer, and run into some inconveniences, that's why I am here recommending some features, to  lessen them.

Zooming: This would be very helpful when making large projects such as a cpu, without this feature there is simply not enough space on the screen for chips, wires, inputs (switches) and outputs (lamps). 

A option, wich allows a chip to maintain their state when saved, which is useful with registers or (if that's to difficult which I think it'll be) a built in chip with no input and a permanent output: To allow things like counters to be eazier (I hope I spelled that right) to create, or make things like ROM.