I'm fine with that! I'm happy to get IG-12 and all those accessories. I'd be even happier if he came with Paz's shield bracer too, and this one was a straight rerelease.
I honestly take it as a combo of "Jango and/or Boba kept spare pieces around" and the "squint and pretend it's the same thing" theory. As it is, Boba also seems to have magically found a second kneepad after one didn't come out of the sarlacc, plus the magic extra dart tube that can come and go...
I've been puzzled that it both has the patch and seems to be a completely new jetpack by the details. Not sure if the idea is that he extensively rebuilt it, or if we're supposed to squint and imagine it always looked like this now.
There's a pretty decent full-sized Babu Frik in Droid Depot at Galaxy's Edge.
The Bo-Katan shield looks to be (permanently?) attached to an included replacement gauntlet, so no chance it'll be able to connect to the original Heavy Mando.
I finally opened the deluxe yesterday. Pretty spectacular...but is there a trick to getting his jetpack's ring on and off that tiny plastic clip for lugging-across-Tatooine mode? Just putting it on bent and whitened the straight part of the clip, and I'm pretty leery about trying to take it off...