Ah, yes, I remember Go Prime (in the same memory as my G1 Skyfire and how my original Autobot cars were the same size as Alternators). Five Primes, combining to form Primus to defeat the Unicron of the week! Till halfway through Primus was a team of 15 mini-bots for some reason, I recall...
So let's see, we have the 13 Primes, and then Sentinel Prime, but Rodimus Prime may or may not have come first, and then the Japanese Local Primes, and then Primacon, who wasn't a Prime, and Optimus Primal, who was recolored into Primal Prime.
Why don't we just get all the Primes to form a support group at this point?
"Hi, I'm *insert name* Prime and I'm the one true leader of the Autobots..."
Crowd: "Hi, Prime..."
-As somewhere in the back: "Hi, I'm Slugfest! Wouldn't kids love a cassette that turns into a DINOSAUR?! Wouldn't that be awesome! And not very big, or expensive to make! No tricky action features to have to homage, work around, or abandon! So many variations on carrier-bots to interact with! In-canon Shattered Glass color scheme already worked out for recolor potential! Hello? Hello....?...."