I have all 3 Concorde from everty developer:
FSX Concorde X FlightsimLabs
Xplane 11 Colimata Concorde
MSFS2020 Concorde DC Design
I’m not here now to say which one is better o more accurate 
, we already know which one is a study level airplane, which one is for all and why.
A Plus Value certain is the support here from @DEAN01973 and @CodenameJack447 
, they help a lot, and i’m sure they will do a great job to fix some bugs, some reversed animations, and maybe implement a little more realism in some parts.
In this Concorde at the moment, i MISS really only 1 thing…and i hope they will be implement it a near future… the CIVA INS system
Other “missing things or new features” would be amazing to have…but not a mandatory things…a CIVA ins instead surely yes 