Who the fuck's been saying this series was (or is) perfect? I mean, I love this series more than Mario loves Link, but I will never consider the Kingdom Hearts series to be perfect in any way, shape, or form... especially consider how the full story is spread across multiple platforms to the point that not even a decent collection could absolve that problem without retconing actual gameplay mechanics and/or dialogue exchanges in cutscenes, for example...
Seriously, this probably would not have been such a bad thing if the Final Mix versions (the true canon versions, in terms of the overall story itself) were released before the HD collections... on top of not spreading the lore around multiple platforms only to retrack/redefine/retcon them when trying to bundle them all up in said HD collections... They clearly didn't have this shit planned out from the start and even if they did, it was basically released it poorly in general since by the time newcomers were trying to get into the series, they didn't have all of the platforms needed for the full experience on top of not realizing all of the retracks/redefines/retcons until they looked it up themselves because no "respecting fan" of the series would "ever" talk about the games released on any Nintendo platform that wasn't Dream Drop Distance since that seemed to be to only one, plot-wise, to care about prior to even the announcement of the HD collections... let alone mentioning the series' multiple dives into the multiplayer spectrum of gaming going all the way back to Kingdom Hearts: Chain of Memories for the Game Boy Advance!
FUCK! Like I said, I love this series, but upon REflection, it only get frustrating to even try to recommend anyone to play all the games in the order of their initial release because 1) There's no point to a newcomer to do that at this point and 2) It only worth it just to see the evolution of the series' gameplay for better or for worse at this point... Overall, no it is not and I'm fine with that part, at least...