'Mega hotel' in Glasgow city centre and new site in Princes Street, Edinburgh, among the chain's plans.
The 15-year-old was discovered in Helensburgh, Argyll and Bute, last week.
The 24-year-old was assaulted in the early hours of Wednesday near Waverley Mall in Edinburgh.
People living in some city centre streets require passes to gain access to their homes.
However, the iconic brand could disappear from its Princes Street home after 181 years.