I agree. I don't know most MP or AM or any other line numbers off by heart. I don't mind the numbers being used in conjunction with the names, as it can help differentiate them, like if you say "MP01 Convoy" as opposed to "MP10 Convoy" -- and personally I would know who MP01 and MP10 are on their own, but I wouldn't know the MP codes for most of my other Masterpieces. When I tell people that I have the Japanese MP Thundercracker, I just say that I have the Japanese or TakaraTOMY MP Thundercracker. I honestly could _not_ tell you what the number of that toy would be without looking it up. Ditto Grimlock and Rodimus etc. Heck, I don't even know what MP Lambor's number is off the top of my head. Many G1 reissues have numbers too... yet I haven't seen anyone refer to them by numbers. :/