How about letting the community decide which idea has the most relevance to them? If that isn’t possible, why not try letting the community decide on a shortlist from the PoI taskforce? The facility to vote on an idea exists on the OPSI data unlocking service, it should with the show us a better way competition as well.
Show us a better way and make citizens rise to the challenge (and obligation) of deciding what they’d like to see achieved.
We can suggest the solution to a problem fairly easily – make us own it as well.