I will be very disappointed in Luffy.
Everyone in the crew has a role to play. Zoro was willing to die to save Luffy's dream even though he has such a great ambition. Zoro begged to Mihawk, the guy he wants to beat, for Luffy's sake. It doesnt make any sense that the first yonko Luffy is aiming to beat is killed by Zoro! In that case, the most disappointed person will be Zoro himself.
Some of you Zoro fans here probably forgot the hierarchy of the crew, but Zoro understands this better than anybody from the strawhats, even more than Luffy:
He knows Luffy outranks him and he is always be happy to settle for the 2nd best and theres no shame in that
He has high expectations of Luffy.
Remember, his loyalty towards Luffy, his trust, expectations and admirations towards his captain makes him so great. Zoro shines brightest in moments like "nothing happened" when he abandoned his ambition and life to save Luffy.
Sometimes I doubt whether these new generation of Zoro fans actually understands his character. Saying more ridiculous stuff about Zoro doesnt make you a bigger Zoro fan, it makes you an annoying dumbass. And such actions only generate more hate towards Zoro.
To sum up: