So the battle lines are drawn: If you think there's no reason MPC/HAMC members shouldn't be able to win a Hugo Award themselves, you want to vote for resolution 4.1.2 and against 4.2.4. The first resolution will come up for its final vote at the Preliminary Business Meeting on Thursday. The second, a constitutional amendment, will only come up for initial consideration. An Objection to Consideration could be lodged against it, but that requires a 2/3 vote against consideration and is unlikely to work, although you might try it anyway.
Assuming 4.2.4 doesn't get squashed, I expect to offer a number of amendments to it on Thursday, starting with an amendment that would remove the existing firewall separating the rest of the Worldcon committee from the Hugo Administration Subcommittee. My reasoning is that if a completely independent organization that is clearly defined as not being part of the current Worldcon is supposedly subject to a conflict of interest, then certainly every member of the actual Worldcon committee has the same conflict of interest.
If 4.2.4 survives the Preliminary Business Meeting, it will come up for debate and passage relatively late on Friday. Yes, if all of the submitted business makes it through to Friday and if everyone uses all of their available debate time, it could get to be a very long meeting.
It does help that two of the items-passed-on are technical changes that are unlikely to be controversial and that I expect will be ratified by unanimous consent.
Update, 1100: Inserted a word that should have been there and was pointed out in comments.