I guess people got spoiled by variety and choice of mods and therefore got confused

.
It is never too late to learn basics about MODs - so it would help understand the process behind JSGME work.
"MOD" come from word "modification".
Imagine we have three modders that are making MODs involving same file.
"
Sensors.sim" is a very good example because slight changes in it have great effect.
If all three modders would take original game file called "
sensors.sim" and modify it every one according their idea - I bet you will not be able to use all three mods, because each of them will
overwright previous one. And this is exactly why people concern - because they don't understand completely how it works.
Now imagine another example that actually based on true events, like they say about movies

.
TDW takes original "stock" game file and creates nice user interface. He
modified this file and his creation is called "MOD".
Then he come up with another idea and created another modification, called IRAI. He did not build it from the scratch, he did not used "stock" file again. He took already
modified by him file and while
keeping previous information
added some new. So second modification is actually
compatible with first.
The trick is - if a new player is installing those mods - he have to install UI
first and IRAI
second. If he will do otherwise - than he will have just one MOD actually installed. Because UI will
overwrite more recent file. You don't put older file on the top of the newer one.
Than another modder come with some good idea. He
took original "stock" file.
Added to it first MOD made by TDW.
Then second (IRAI). And only
after that he
added new info, modifying "
sensors.sim" file yet again. If you paid any attention - nobody did
erase any previous information, it's
included in new file.
As a result - it will work just fine because he made it
compatible with previous two. Only thing to remember - is to install them in
chronological order. Oldest - first. Newer one - last. And in this case when JSGME every time will come with message that "
sensors.sim" is about to be
overwritten - there is nothing to worry about. Because of MODs comparability nothing get lost and everything will work just fine.
There is nothing to worry about MODs order of installation as long as JSGME does not give you warning massage. That's usually means that MODs you are installing
don't share any files and you can install them in
any order.
If you start getting messages - that's mean files are
shared and at that point you have to make sure that they are
compatible and in what
order they have to be installed so no options will get lost.
If you
not sure about comparability - you can
ask MOD's author about it.
As for order of installation - easiest way to figure it out is to look at MODs list of some MOD junky like
stoianm or myself and see what comes first and what after that.
Very easy. No more confusion.