Nah. So long as the receiver can link up with your components that need to be controlled (usually speed controllers), then the size won't matter. What does matter is that if you link up more components to the one receiver, you cut the positive wire on the RC wire on all but one of the wires as so to not overload the receiver and cause a burnout or other control oddities.

How I tend to achieve this is by using JR extender wires (https://hobbyking.com/en_us/10cm-ser...10pcs-bag.html) and cut the positive line there so if I need that component to power a receiver later, I don't need to re-solder the wire.

This normally does work but I have had it in the past where even doing this doesn't work. This is why my Middleweight uses two receivers, one for the drive and one for the weapon as having both on the same receiver caused the weapon to not fire properly. This does work, however, on my Featherweight so it is a bit of case of trial and error.