The tram shed at Rigby Road is almost derelict - it'd take ages and a lot of money to refurbish is and get it to a public visitable standard. And what would they do with fifty odd trams while they were renovating the depot? Put them outside under tarps? That'd do them good - not. Move them to another site - and then back again? At what additional cost on top of renovating the depot? Find an alternative undercover location? How much would that cost? Could it even be connected to the tramway rail network? And the cost of moving all the trams... Then almost all the trams would need money spending on them before they could run again... Rigby Road is too big and there are too many duplicates in the heritage fleet anyway... Anyone who thinks that the entire collection can be saved, in a secure weatherproof site, with all the vehicles in presentable condition is living in cloud cuckoo land. It took the National Tramway Museum more than 60 years to get where it is now. Without massive public-funded investment getting Blackpool's heritage trams on a similar level isn't going to be any different.
In my opinion Blackpool has to cut its cloth according to realistic measures of potentially available funding and future income. A small shed, probably connected to or alongside Starr Gate, and a few operational heritage trams (a Boat, a Balloon, the Western Train, HMS Blackpool, the trawler, a Standard, Bolton 66 if you must) that are operable but could be visited when they're not running. Cosmetically restore a few more to be put in the same shed (Rocket, Twin Set, Railcoach). Sell the rest - including potentially operable Balloons, Boats, the B-fleet - to help raise money for the project.