The first one that popped in my head before reading was essentially 'Trusted personas that keep the chain safe'. I voted for that, 'Produce blocks reliably' because its kind of literally their purpose 😅. 'Actively test upcoming code changes' because it kind of goes hand in hand with the previous one IMO. 'HBD APR, account costs, block size' I also chose just because this is the one that feels like 'representation' to me. As in I want to support the witness that is going to push for the features or changes in the ecosystem that I also want to see.
The other three are all fine and good too, especially 'Build things on chain without special funding'. However, I don't view those three as 'essential'. If it were a political election and these were the platforms of the candidates, these are the three I would consider 'bonus' if they were doing it but not necessary for the role.