I like clickable cockpits. Why should you set-up and remember 100 key combinations for things that are sitting right in front of you in the virtual pit? I understand that combat essential stuf is more helpful assigned on controlers but so many things are right there in front of you. Why should i remember Alt+Shift+X for something that i use once in a while when i can just reach and touch it?
Why should I remember the key combination for turning the gunsight on in my FSX FW190, when I can "press" the switch that is right in front of me on the gunsight. That way I learn the cockpit layout instead of memorizing key combinations. It makes the whole process a lot more natural.
Think about selecting the proper fuel tanks for example. You would have to remember every key combination for every pump and gauge selector switch. You don't need that. You have to just remember where they are in the pit.
Look at this clip from classic Hangar with the start-up procedures for their FSX FW190A8. It may seem complicated at first, but it is very intuitive and easy to remember:
I don't get this 'Clickable pit scare".
This doesn't take away from your ability to assign keys and controlers to whatever function you want, but some things are much easier and more natural to use on clickable pit. This also makes you understand the cockpit and aircraft systems better.