This is a kind of right commercial decision.
I find no reason they should/cannot not use the old Joker jacket pattern as they indeed paid me very well
While I would like to point out that even those all the suits seems look similar, the style, cutting, fitting are actually not the same.
e.g. It is actually not the same suit for MIB and Agent Smith. Agent Smith wearing cheap ready to wear suits which you can find in the department store. The fitting is not nice which is belong to 80~90's.
While the suits of MIB is well tailored, with small lapel, the cutting close to 60'S
It just most figure clothing producer are unable to demonstrate such difference