No one knows when the fillers will end, It seems that sometimes a few episode titles are leaked and then everyone comes to the wishful thinking that the next episode after the named fillers will be the start of the real story again, I remember a lot of people being very excited about 182 being the last filler episode for that reason.
I just wish we could see something other than Naruto + a few randoms from the other teams. I woulod love to see something like Kakashi, Asuma and Kurenai going on some awsome, action packed Jounin rank mission or some made up heartbreaking back stories of characters who aren't mainstream enough to ever have such an episode in the main story (kinda like they did with Anko) or let's have a sneak peak at how Sakura is getting on with her training.
I've actually quite enjoyed some of the amusing one episode fillers, the one where Shino drinks the laughing potion was just so random it was funny and I loved that crazy one where the men pretended to be Gai and Lee, the Onbu a couple of weeks ago was so cute! But if a story goes on for more than a few epiosdes I start to get quite bored of it, for example that one with the samurai ghost just did my head in after a couple of weeks, this most recent one looks to be going the same way.
Character development in the fillers can only go so far as they don't want to spoil the surprise of things to come after the time skip, so I doubt in these episodes anyone is going to learn some rad cool new techniques... But I do wish they'd quit it with the rasengan abuse! The Rasengan, the ultimate kick *** move developed by one of the strongest ninjas Konoha has ever known, taught to a boy with a mysterious and legendary power who uses it to prove his strength to the new hokage. Now what is it being used for? ****ing mixing dough and paddling boats... NO!!! What a humiliation to the fourths memory!
I would presume the dub will dub these episodes as even when they're over they may still reappear, for example when we rejoined the normal story after the small filler story about the race in the Tea country, Sasuke had regular flashbacks about losing to Itachi but the fact that he couldn't beat Aoi while Naruto could was also featured which wasn't actually a bad addition and gave him more of a reason to want to fight with Naruto. As for these fillers, if we ever see any of the other characters having to help out Naruto in the main story I bet these fillers will be in some form of flashback.
I don't know how I would feel if they'd just stopped showing Naruto altogether for a year, I guess my interest for the show would be even less so in a way the fillers are a good thing. We're all wishing they would just get on with it, but there's nothing we can actually do about it so let's just wait it out.