Hi Guys.
Welcome Hans !
Pretty sure you mean myself.... I´m the Airbus Hater here
Yes i often say "Airbus sucks" and "I hate Airbus" ..... But hopefully i use always a Smilie behind

and show its "ironic".
So i love Boeing and this have many many reasons.
Whatever..... Sure Also Airbus is a wonderfull piece of Technic. So enjoy it if you like it !
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About MCC.
Here i can say.... For me it is the wrong way to copy it or learn from it. Use it as a example sounds good. But its much harder as it seems.
I see hundrets of MCC files from users while i make Support for MF.
(Without sounding arrogant

) ..... I will say i understand Mobiflight more then most of other Users here..... BUT If i see a MCC file from a new User.... And i still know it´s for e.g. a PMDG737.... And he also tell me basicly what he build......
Let me say i need 1-2 Hours before i beginn to understand what configline is used for what ( Whatever i still build those configs multiple times already myself)
Reason: As Stephan said.... Just for a simple thing like tha Parking Brake LED..... There exist 100 different ways to create this system. Each work ..... But if you NOT know what the guy is doing here ( and how his brain work) then you will not understand the MCC file directly..... You must first understand his logic.... Then you can see what he do.
Summary:
If its a help for you ( whatever i not think so) then use those files. But i will highly recommend.... LEARN the whole Thematic.
Like in the old Speach..... "Not give a Hungry Guy a fish..... Teach him to fishing" .....
If i guide you perfectly to build a Parking Brake LED ..... Then you get stuck again if you need the GEAR Status LED.
But if you learn how Output Configs Work.... What Offsets are for.... And finaly all aspects of Mobiflight..... Then you can Build every In- and Output you will ever Need.
So.... If you just need a FCU.... Copy it 1:1 from a User and be happy. If you like to build multiple own parts or a full cockpit..... Then invest time and learn "MF"completly!