There in lies the main problem. There is always something that’s non standard. It would be much easier if this sim forced some control standards for its aircraft dev but alas it does not. Not even standard stuff like a master battery or avionics switch uses the same control on every aircraft and that to me is just plain silly. It’s why everyone with external controls has to configure them for each aircraft. It could be so much easier with some standardisation and a logical thought process but it’s left as a free for all and this is what we end up with for MSFS.
On the SI side there are many new and updated instruments continually being added by the community with the total now at over 1000 different ones. I’ve had lots of requests for my stuff and I’ve been trying to get them into the SI store as premium panels. I have one available now but it’s proving a slow process getting the others added.