Yup, I've been updating the list as we go.
Lol, I know, I think I'm fresh out of ideas as well - there can't honestly be anything else we haven't covered! I think we really do have the definitive list of suggestions; if all or most can be implemented in a fan edit, I'll finally be able to let this film sit beside my original Indy trilogy DVD boxset. Right now, that's just not happening with the theatrical cut, on principal, lol.
On JohnGreenArt's suggestions - I included the suggestions about Indy figuring things out for himself, and also about cutting Mutt revealing that the torches at Akator had been used not long before they arrived (I'll go out on a limb and say that most, if not all, would agree wth these ideas), but am unsure about the other suggestions put forward - maybe these could be discussed, to arrive at a consensus before they are included on the page 1 list?
I think that removing the graveyard action sequence with the natives would severely damage the pace of the film - remember, this action seqence comes, thankfully, after a period of plot development and exposition; cutting it entirely could drag the film out. Also, it is in this sequence that it has been proposed that we could have Indy fire his gun, which he doesn't do anywhere else in the film (and this is a first for an Indy film), and this is a pretty crucial edit which would need to be done.
Also, I think cutting the 'Mac-drops-the-trackers-for-Spalko' segments would make it look very strange when Spalko just suddenly turns up in the main chamber where the Crystal Skulls are - and, it would mean sacrificing the scene where the Russians, under Spalko's order, ruthlessly shoot down the Akator natives. That scene, for me, added much needed grit to the film, and made us genuinely wary of Spalko, as we were seeing here (for arguably the first time) what she was capable of. Plus, I think the tracker-segments reinforce just how damn dastardly Mac is!
Finally, at the diner, cutting Indy asking about Mutt's mum would also seem inconsistent, in my opinion. Mutt's mum being captured by the Russians is one of the key reasons (if not the reason) why Mutt is choosing to personally get involved, and why Indy is being asked for help. So, Indy is bound to ask who his mother is - it would seem strange if he just didn't bother to follow up on that crucial piece of Mutt's tale. And it doesn't necessarily follow that Indy would then ask about Mutt's father - Mutt hadn't mentioned him at all, so Indy would assume he was no longer on the scene (having either died or left). Plus, cutting this would mean losing Mutt's hot-headed-ness (which becomes a considerable part of his character) when he is angered by Indy's comment ('there's been a lot of Marys kid...' - which is a great line! And a very Indy-like line!). Then, it would make Mutt's coldness to Indy after this confrontation ('oh, you're a teacher? Well, that's gonna be a lot of help...') seem out of place.
But that's just my two cents!