I'm sorry, but these all sound terrible. I'm skipping the entire first episode of the season altogether, to have TWO talking Pal and Kate entries in the entire half hour, that's beyond overkill.
Buster sucking his thumb? Seriously? Like when Brain was held back in kindergarten? Really?
And these stories have been done before, if not on ARTHUR, on other cartoons: "Molina's Mulligan" (what?) was an episode of RECESS, "Just the Ticket" was an episode of ROCKO'S MODERN LIFE, "Kidonia"was two different episodes of ED, EDD N EDDY (one where the Eds build their own city called Edtropolis, another where the Ed and Eddy convince the other cul-de-sac kids to forget about rules), and "Opposites Distract" is a plot that's been done a million times already.