Having defined budgets has been very helpful for me! Otherwise, I fall prey to the perils of maximization.
I think one thing lacking in the EtG community is actually feeling like you're a part of the EA space. Since my day to day interaction is outside of the EA space, it can feel very difficult to remain value-aligned and socially close to people who share the same value system unless I put in a very concerted effort.
Based on my anecdotal experience, it could be very high value to have some sort of social community developed around this!
This isn't exactly what you asked for, but the Rethink Priorities Cross-Cause Cost-Effectiveness Model tool or their Portfolio Builder Tool may be of interest to you!
In the US context, I am curious how tractable mail-in ballot reform is. This was passed in Arizona in 1991 and Colorado in 2013, although I'm unsure what the progress looks like at a large scale.
I've never seen a BOTEC of DALYs/$ for land use reform so unsure how it compares to other interventions, but my impression is that it is in the EA discourse because OP funds it. I lean towards it not being an effective use of funds, but I have low confidence in that.
https://www.openphilanthropy.org/focus/land-use-reform/