Thought I'd weigh in on this one real quick.
I'm one of a few idiots that actually, genuinely enjoys speedrunning demo maps as soldier and I am absolutely in favour of having no points awarded for soldier completions on demo maps. This is the primary reason that there are a bunch of bad but dedicated players in the top 50 on tempus (possibly me included).
To add to that, I think that you should have a proper conversation with the top demo players about demo bounces / bhops, and see what they really want. Do not take soldier wallpogo mains opinions into account. They gain no points from demo maps, why should they care?
I think the main argument for keeping demo bounces is to make it so that the times on mmod are comparable to tempus - an asdf WR on mmod with no bhop is almost guaranteed to be slower than the current tempus record - how much do the top demo players value that? I am OK with the games being entirely separate.
When making any decisions or suggestions about mmod, I think the 'speedrun' aspect of it should be held in your mind at all times. One of the main problems with tempus (imo) is that you can get into the top 100 with no top times at all, and potentially with 5 hour runs on loads of maps, as long as you complete them all eventually. For me, some of the charm of jumping was lost when angled bhopping was discovered. It allowed for so many new strats that were so good, that you were forced to use them to be competitive. Does something like that really add to the classic jump speedrun experience? You could argue that it's technically possible, therefore we should use it. But I'd argue it's more fun to speedrun a jump properly, instead of skipping loads of stuff with an awkward bhop that takes 5 seconds and staring at showpos to set up. Intended bhops / bounces are a different story.
I think that if you get rid of stuff like that (bhops in places they were unintended, demo bhops etc) then you should remove speedo and third person as well, and just count mmod and tempus as different things. It would clean up the whole thing and create a more streamlined experience for everyone. If this takes off, we could see (hopefully, fingers crossed) a large increase in the amount of people who want to play surf/jump/bhop whatever, and we need to make it seem accessible, but not too shallow. I think removing bounces entirely, or making them trivial is too far, but keeping all the crap we have to do nowadays could be too much.
TL;DR:
No points for soldier on demo maps: good - removes bad gamers from high ranks.
Talk to top demo mains ONLY about demo bounces/bhops: soldiers get no points from demo maps so ignore wallpogo mains.
IMO it is OK if tf2 and mmod times are not comparable: if anything is changed then it is unfair to compare them - this is fine.
Keep the 'speedrun game' mindset when making decisions: do angled bhops, random bounces, speedo and third person really add to the speedrun experience? Think big picture.