i've seen a healthy amount of the show and the movies. like any tv series it has bad episodes or ones you wont find intresting.
one thing this tv show does i've noticed is expand the universe. to maintain creative control to prevent unsanctioned worlds and races and books, to maintain creative control over the star wars brand.
they fill in worlds, races, ship classes, make the jedi order to there liking. by doing this im sure used information in there new mmo, to cement the show into the starwars galaxy. by doing this they add in dozens of new worlds. for example they added 2 worlds that pretty much hate eachother, the world was jango/boba fetts home world, which was the person they based the clone troopers off.
while it may seem dumb to many people i believe they have some method behind this. each world they create adds another piece to the puzzle. the bigger the puzzle the more pieces they can play with.
The star wars movies had missing pieces to it, primarily the world was a desolate hiding place. add up all the planets that where empty or had isolationists, scarcely populated or primitives, tatooine, endore, hoth, kashyyyk, mustafar, bespin (cloud city), degobah, Kamino, and the asteroid luke and liah where born.
have corusant, yavin 4, naboo and aldaran. 1 of which was blown up and nearly got the other. i think they where aiming for more populated planets and more videogame and content to make future movies if they choose.
Also to get kids addicted to star wars also, there are more than a few reasons for the cartoon.