I just wish they didn't have to do 24 episodes* per season. The episodes that have a specific point are still pretty good (I liked Barney's proposal and the one where Robin's dad comes into town). The "filler" episodes are the ones that suck (the one with Marshall and Lily's housewarming party on Long Island, with Martin Short in a beekeeper suit on fire, was terrible). If they could cut it back to maybe 12 episodes per season, I'd gladly go a couple weeks in between episodes just to be able to see a better episode.
* re: 24 episodes/season ... some people online have theorized that Season 9 will be sort of like the show "24," where the entire season takes place on the wedding day but each half hour is filmed in real time.