I think snape is innocent for other reasons here! read my theories!!!

I have my own...

1 Is Malfoy really a death eater?

it must be, although he might even be the one that betrays the dark lord because just as he could kill dumbledore he would regret other acts. But not likely though because malfoy's family runs a tradition in the dark arts!

2 Snape could be innocent!!

yes! doesn't look like? well look at it this way! everything sape told dumpledore was never confirmed by anyone and he is a highly accomplish occlumens he could be telling the truth and as for killing dumbledore well he made the unbreakable vow didn't he? and the never really tried to harm harry even if he hated him...

3 harry's future

if he leave's school we move to another world of possibilities as for the fact that nothing garantees that 7th is the last book! again this could be wrong and JKR decides to publish a book 100% of action and mistery and adventure which althoug very hard would be a grand final!
even then there is the question of who will be his supporters? the DA? his friends? the order? hogwarts staff? the ministry (most unlikely) ? on his own (don't think so)? could harry speak to dumbleadore's portrait about the mission and could the albus portrait help him (?) find the remaining horcruxes?

4 ron and hermiony and HP+ginny?

they will for sure end up together snoging ron+hermy, but as for harry the story is uncertain!
i think ginny will go with harry even if harry doesn't want to (and because dumbledore would like there to be more love in this world if there could be) and might might get kidnapped by a death eater or even by HE-WHO-MUST-NOT-BE-NAMED ending up killed or rescued and living happily ever after (i doubt that 2nd chance).

5 Harry potter is gryffindor last descendent!

noticed that the house bellonging to his parents is called Godric's hollow? Godric Gryffindor... any resemblense? and... would it not take a true gryffindor to take the sword out of the hat? there must have been loads of people truly loyal to gryffindor but not one of his own blood!! i think james potter is the blood of gryffindor!!! that whould bring a shout to the gryffindor VS slytherin fidght as tom marvolo ridle is from slytherin....
just answer me i'll be in touch thank you!!!