So what are the best solutions people have?
Ones I mentioned are improving the town over time, replacing bad housing for good, building up more and more good people in these areas. Gentrification in some respects but also just improving things for people there. More people are then paying taxes, get people into work, more paying tax means more to spend on the town in many ways.
The central areas are bad in some ways, but there's also many good people there who have to put up with these idiots.
Being tough on crime, lock these idiots away, discouraging anti-social behaviour. Many different ways to do that including technological advances. Making areas nicer can help with the broken window theory.
Making Blackpool better so that the next generation have more opportunity, better education etc so that'll reduce the issue over time. Already well underway and much more to do of course. There's already a lot more opportunities than in the past where many felt they had to leave for work etc, so retaining more good Blackpool people means things are going in the right direction.
There's also the greening up of the town, which is happening, 10k or more trees were being planted, but the central areas are badly lacking and have very few quick wins like grass verges to plant into, meaning it needs physical work to reconfigure streets etc. Greenery is well known to be good for us in many ways, mental health, calming, less anger etc.
Add all that together and it will have an impact, but it won't be a quick fix, although some could be in place fairly quickly.
The quickest way would be if a party got into power with a backbone and get tough on crime.