Please consider the possibility that 3i proposals are aimed at defending PTS, AGS, and DNS interests medium-and long-term. In this case, holders of each DAC have to agree on some balanced compromise, any resolution would be impossible without re-distribution of DAC tokens properties.
At almost any stage, as a leader 3i has advanced private information compared to all other investors. Not all of this can be made public instanteniously. If 3i, for example, sees a strong possibility that without merger most other DACs' prospects would be threatened by VOTE soon, then we should be glad that they propose the merger. Then everyone is strengthened and gets a great chance of multiplying your returns, without conflict of interest for 3i.
Making investment decisions which are not based on trust in 3i is currently very difficult, unfortunately. So please ask them questions, evaluate their track record, make your proposals, and decide whether you trust them or not finding balance in defending your medium- and long-term interests.