Before we run this proposal it was discussed nearly a month, first in discord and than in this post:

https://hive.blog/splinterlands/@schachoberhessen/splinterlands-dao-proposal-remove-the-reward-reducting-for-brawl-tiers-with-less-than-10-guilds-participating-and-remove-the

Than it run one week as preprosal, visible for everybody who want see it at Peakmonsters and Splex and we even don in this phase (preprosal) a change by removing the top3-bonus only for crownes and merits and not for SPS.

So I think it was all open and everybody could discuss.
IMO it is not the best way to just come after all is decided and the real proposal run already when it was so long before time to address all issues and I think if a guild is really interested than somebody of this guild can also look once a week if their is a guild-related topic and must not wait for an extra invitation.