Gotta say I'm tempted by your G1 Ultra Magnus but I'm moving towards "retirement" too.
How do you choose what stays and what goes? I thought I could just keep my G1 and MP Optimus and Megatrons and that would be that...then I think "I'll keep the Classics/Henkei versions too!".
Then I think I should keep the FP G3 and TFCON PC trailer too, and why not Classics UM and the CC traielr too, then I remember my G1 Jetfire, then I think I'll keep Henkei Jetfire
and Dark Skyfire too, but then I think all my Starscreams should stay, and why not all the Seekers then...oh shit, the Autobots are outnumbered so I should keep Hot Rod, Rodimus, Jazz, Cliffjumper.....aaaaaahhh!!!!
Hats off to you for making the hard decisions that I obviously can't make
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