@depressedape on the polling, the Aave team can set it up in the next days for getting the sentiment before creating the AIP1.
Having options later on the slashing part in the polling would serve well the community sentiment.
On the team’s judgement, I think the community does not need to rely too much on the team, rather the team can poll a sentiment that the community endorses the most. I would imagine others will model as well the incentives in the future when Slashing and Balancer AMM is activated.