One way to make the use of Booming transparent, and stop abuse, is to make the management of these votes public. Post the chosen ones.
In Steem Venezuela, a daily selection of 5 publications is made and each day it is published who are the chosen ones and who is responsible for doing this.
This saves work and makes the management of the resources granted to the communities as transparent as possible.
I think that it is great that you do this and it is reflected in February's report - Steem Venezuela has one of the fairest distribution of votes out of all the communities,
I agree that transparency is crucial and perhaps it would be worth considering going further and producing a report on who the community account has been supporting (justyy's site can make this a simple process).
Similar to the booming votes being used to primarily upvote the community account and admin (the same person getting 2 slices of cake), the community account primarily upvotes the admin too.