They all have the tendency to use the characters to suit the plot, rather than let the characters guide the plot.
Absolutely! I rant about it not infrequently. I think Rodney frequently reverts to earlier stages of character development, not just for plot reasons, but because the writers think it will get them a cheap laugh. Hey, we all revert sometimes, but I'm really tired of watching Rodney act like he did when he was still a noob.

BH said he was particularly struck by the paucity of friendship shown between Ronon and Rodney given how close Rodney was to dying not all that long ago. They may not get each other, but they do care for each other. (Awww, team....)