9.
Appetite was 10/10. Lies and the Illusions were 8.5 / 10. They have plenty of good songs that were never released as singles.
The light that burns twice as bright burns half as long. Four good albums and kaput. They Highlander 2'd themselves with The Spaghetti Incident.
I'd politely argue it may have been the whiplash effect of the November Rain and Estranged videos that soured the "general" fan to Guns. They were the perfect albatross to Axl Rose's changing stature in pop culture.
I think sentiment towards Gn'R had changed by '92/'93 and it didn't help Cobain would slag on them every chance he got. Gn'R were no longer one of the cool kids like Pearl Jam, Soundgarden, Nirvana, etc. etc.
What still blows my mind is the absolute poor mixing quality of the Illusion albums compared to The Black Album, Ten and Nevermind. Hard for me to listen to those albums today and Guns is my favourite band of all time.