We definitely need to be looking at how to provide the increased services and ameneties required for higher density housing. This is often easier in new estates where it is possible to mandate something like parkland and shops be included, but a lot of areas are undergoing renewal of individual blocks and it is much harder to do there. Maybe a system for Councils to aquire some blocks to create public facilities is needed.
Where I am a lot of older housing, generally housing for one older person or couple, is being sold and redeveloped to create townhouses for families - generally two to four families are replacing one or two people. Which means the area is very quickly outstripping the capacity of local ameneties, especially parks. It doesn't need to be anything fancy, but having somewhere within walking distance that people can go to kick a ball around or sit and chat makes a huge difference to the quality of life. We need to replace individual back yards with shared equivilents, not just remove them and leave people sitting inside air conditioned boxes playing with social media.