Now, even if Britain did get control of the New Territories in perpetuity in the Second Convention of Peking, or at a later date, British rule over Hong Kong, or Hong Kong independence, isn't tenable without China's say so (and China isn't going to give its say so. Push comes to shove, it'll just pull a Goa).
So let's that that instead of a 99 year lease for the New Territories, the Second Convention of Peking leases the New Territories for 120 years (or 125 years, though we might be going into Future History territory with that date), thus moving the Handover to 2017 (or 2022).
I figured 120-125 years is interesting enough to butterfly some differences into being (the CCP isn't going to wait around for a 200 year lease to run out).
So what political, economic and other assorted differences from OTL would we see if the Handover happened last year? Or if it will happen in three year's time?