Loads of great ideas - but the problem with a scattergun approach to marketing is that if sales do go up, you don't know what's worked and what hasn't, so you don't know what to continue, and what to sack off.
For mine, I'd pick two and execute them in the off-season; the main one would be schools, with a second line of attack in the public sector. For schools, I'd significantly ramp up the player involvement and link them with PE departments - doing conditioning, nutrition and coaching - not just RL - and at the same time, get to parents through school comms channels, offering free tickets for kids and teachers - requiring a paying parent to accompany. Players like Big Dave and Pauli should be assigned to the biggest schools with the largest catchment areas - and players with connections to a particular school could go there. If the club engages as a partner around health, fitness and nutrition, there's a genuine reason for them to become partners of the club.
A similar project could be done with public sector organisations - especially the NHS - with a public health crisis in full flow mainly around lifestyle choices - and a gang of super fit, professional athletes able to offer genuine added value - it shouldn't be that hard to get the NHS Health Promotion team to link up with the club.
The lack of connectivity with the local community will never be solved with posters and A-boards - the club has way more to offer than that, and building relationships with large demographics has to be key?