I did think!
man WTF?!who told you rin is dead?!she just left konoha and thats all we know about her.tobi also has one eye so what?he can use his sharingan perfectly!!and mangekyo sharingan does not have 3 abilities as u said.there might be many more.noone of uchiha had amateratsu or sussanoo except itachi because he created them.many more teqniques can be created.it depends on ninjas knowlidge and capability.we dont know tobis abilities yet.we only know he uses time/space jutsu.maybe he also has created his own MS teqniques who knows.so...first think and only then post!
how many people inNaruto has ever gained MS?...
lets see about that there is: Mandara/Tobi, Itachi, Sasuke and Kakashi even know i dont think Kakashi's is a real MS
lets now see what they have ever used of abbilities
they have used: Tsukiyomi, amastruma what ever the black flames are called, the justu where Itachi summons that big thing.
then there is Kakashi who use the time and space sharingan if you ask me his sharingan is nothing like the rest i wouldent even call Kakashi's a MS, you just think it is but are you really sure who has ever called MS in the manga... none so why are people saying all the time "kakashi's MS" who the hell started that i know all youre minds cuz what you saw was... he evolved his Sharingan and becuz he did that evrybody assumed that it had to be MS cuz thats the "ONLY" explenation... why?
and yes there is rummors of more powers to the MS or wait no thats the EMS
that should have powers to control the kyubi and all that crap and then there is the theory that brings us back to when Sharingan was born.(im not gonna do a whole paper of that story so ill cut to the point)
the theory is that the Father of the Sharingan was sealed...
and the only way to unseal him is to do one of each MS abilities on the seal at the same time...
well its a old theory that brought a light on why Itachi wanted Sasuke to get MS...
so im just bringing up old stuff. and cant even remember the site i dicussed it on anymore.
SO YEA I DO THINK B4 I POST