(The 50GB option would allow for even more choices too.)
I would say, if your time and effort allows for it, to make two options. I haven’t the slightest idea how much time and effort that would take, but I know it would be very considerable so I won’t even presume.
If there were two options though - one for 50gb and one for 25gb, I wouldn’t personally opt for 25gb (as I wouldn’t be using it if the 50gb was offered, and I’m assuming all those listed extras would fit on a DL disc)… But I do think if the 50gb disc is offered, that a 25gb be offered as well. There are many here, I’m supposing, that aren’t able to do DL and have been keeping up with your project and are banking on consistency, and have only been using 25gb discs all along. If it’s a vote for “either, or” as in either 25gb, or 50 gb, I’d choose 25gb just so it didn’t fuck up all those currently able to use it, even though I wouldn’t prefer it. If it could be two different disc size options, with all options on the 50gb and one with “the best chosen extras” on a single layer 25gb, I think that would be absolutely ideal. That way, on the 50gb disc, you could absolutely maximize bitrate even with the kitchen sink included.
I’m also more than a little buzzed and probably rambling.