The Takara Encore line has been good not only for Generation One reissues, but also for improvements to the figures themselves. Skywarp and Thundercracker have tampoed Decepticon symbols, Omega Supreme has a face under his visor, and the Minibots had added paint applications, just to name a few.
The upcoming Encore 12 Metroplex will also have something that has never been part of a mass release: an added tab on the turret piece of Slammer, the tank drone of the Autobot city, first seen in Snakas’ Wonderfest report seen here. This will allow the turret piece to attach into Metroplex’s fist hole, forming an additional tower in city mode. (And if you like fanmodes, it should also look fine as a replacement for one of his fists in robot mode, if you want to do a Shockwave/Grapple/Trailbreaker-type look!)