i actually beat the game before ANY of my characters hit 50...and one of my main characters for beating the game was only at like level 15...i found ff8 TOO easy. ff7...the last boss can be challenging, VERY challenging, the way limits worked was great, storyline was pretty good, but what i hate about final fantasy games in general is the character development. sephiroth could have used some more character development, his motive is that he wants jenova(sp?) to take over the world...why would he do this? because he read books in nimbelheim(sp?) well i think that they didnt explain that much for him. Vincent...you really had to work to find out his background, and even then it was weak. tifa, i really dont know too much except her and cloud were family friends. barret, he probably had among the best character development of the game. red xiii(i think) was OK character development but i never liked his character in general. cait sith...could use more character development. yuffie was a FAIR character. Aeris...among the best character development, but still not enough. Cid was ok character development, i liked his character but he could use improvements. Cloud...obviously should have the best character and he did...but there are some things he did in-game that made me wonder...WTF!?!?
now, thats just ff7. IMO ff7 has adequate character development.
ff8 had poor character development, but most of the game was good except it was far too easy.
ff9 characters had awesome character development up untill late 3rd disk...why doesnt anyone have ANYTHING special to do? thats my wonder...
now a game you should pick up (made by square) is xenogears.(Not xenosaga) this game has BRILLIANT character development, one character has pathetic character development(rico if u wanted to know) but other than that, the game is just brilliant because you learn a LOT about most of the characters(Minus 1) and then there was a manga that went along with the game...xenogears is among the best rpgs(if not the best) ever made.
outside of square...capcom's BOF series is so so in terms of character dev...chronotrigger...brilliant character development on the most part, they did a good job.