They can change the collar Matt, actually...
I popped apart a VOTC Lando and it's one of the oddest construction designs of a figure I have seen. The shirt's collar and neck are actually a single piece that is connected to a strange pin on the shirt. Almost looks like it was an intentional modular design, but I don't think that's the case. Just looks like it.
The belt too is a separate piece (his big wrangler jeans belt buckle thing) if I recall... So that too could be swapped out.
Just saying that we can assume what we see there is what we're getting though, is anyone upset if his sleeves aren't technically right? The pants are completely debateable as I don't believe any production shot of Lando in that outfit exists, or has been show by LFL if it does exist... But the shirt I thought you could see in the movie at least briefly. So, if the shirt is Han all the way and not Senfeld's pirate shirt, but we get a figure with Seinfeld shirt, does that bother anyone? Honestly I almost like the way that figure looks so much that I won't mind. Maybe that's 100% my lack of interest in a smuggler Lando figure in the first place though. Inaccuracy is annoying to me usually, just not in this case for some reason... not as much anyway.