I feel as though the problem with HG/SS wasn't so much that ITS A BAD GAME or whatever(i loved it), it's mostly for the fact that it didn't bring anything GROUND BREAKING or something that set the game apart from what we already have from the sinnoh games.
I mean, i LOVED my SS playthrough, and i actually couldn't stand my platinum story playthrough lol, but im trying to be unbiased here. They added little things into the game like pokemon following you, poke'athlon, pokewalker, you know, little things...but thats the problem with the game, they're just that, little things added, the gameplays the same as it was in sinnoh, you have access to 4th gen pokes as in sinnoh(some of which you can ONLY GET in sinnoh such as leafeon and magnezone if not i stand corrected...), theres a GTS, they changed the pc system to go from controller wise to stylus friendly(i personally liked it, but it WAS a big change and i'm not too sure if many people actually knew about that either before purchasing the game so it was kind of a let down in that department for some...) its stuff people already had in their other games. so yea, there's my two cents on the argument...