Don't really post here...(Cause I see some people as being way too extreme fanboys over characters here, ha ha, and it makes it hard for me to take comments and responses like that seriously), but I'd like to share my thoughts on a possible part 3...
I think I'm pretty against a Part 3 in a way. The end of the manga has disappointed me really. Hopefully its just because I don't exactly like mangas over the anime, but its really felt like its been milked for a while now... Obitos the final boss...Nope! Madara is...Nope! Kaguya is.... Nope! Sasuke is... Not to say I'm not happy there will be a Naruto VS Sasuke, I was wondering if it'd still happen, but even this battle is disappointing me. I think its more because it looks like it'll be short and I don't think it will top the first Naruto VS Sasuke battle, but I do like it for showing how far they've come since then.
After how the end of Part 2 is going, I don't particularly want a Part 3. If however they're sorta..."Passing the torch" from Naruto and etc. to a new group of characters (Perhaps with the former still around and having an influence on events perhaps), I'll be more in favour of that, however at this point I'd much rather Naruto end at Part 2, with a Naruto VS Sasuke fight and the conclusion of that. I'm hoping The Last is exactly that, just a conclusion, cause if it is really just introducing a new plot for Naruto and etc. to carry on, its just gonna feel like Deja Vu, "Chasing Sasuke again", and probably Another "Final battle" and its boring me even thinking of that possibility. I don't think there should be a part 3 just for the sake of it. As I said, if its going to be done, introduce to a new set of characters, or even taking place in the past, showing how Kaguya came to get her powers and etc. filling the plot holes there.
(Also for the record, I may be one of the few who doesnt like Sasuke's The Last Design...which is a shame cause I've loved all his designs so far and like him as a character. Hopefully when the full design is out it'll change my mind)