Building on your idea or giving an example of how I would picture ur idea.
- So if we're talking hell format aka ten stages. Then something along the lines of say starting off with mobs for stage 1-4. Something that's relatively low hp pool for 10mil tcp that 8 mil peeps can clear. Now 5-8 these stages are meant for let's say 20 mil tcp peeps. With the side bosses from tiamat for stage 5,6 then stage 7 be a boss rush of asmo v1 however u can res a limit of 5 times in stage 7. (For the asmo v1 boss rush section no one shot mechanics but a time limit of say 5 minutes that each boss adds 5 minutes until u clear that stage) Stage 8 just be tiamat either from heart or castle. Of course with appropriate hp scaling for those stages. Now stage 9 make it meant for 30 mil peeps with Gina but with a ridiculous amount of hp and make it be a dps check to advance to the final stage. Like make it unkillable but if you reach a threshold of damage expected for 30 mil peeps then you can move on to stage 10. Now Stage 10 make it's hp the amount of MK raid core for starters. This is where the 40 mil plus peeps come in and the boss let it be omega knight. Now we can have this be a stage with no res cause omega knight's patterns would be the same. Just that u need the dps to clear it and know the patterns. This can also work for number 2 where we do all of this just scale it with the amount of peeps. 2 peeps = 2x scaler, 3 peeps = 3x and 4 peeps = 5x.
That's just a suggestion of how I would like to see your idea implement. It's a good idea and I would love to see it done properly so there's a consistent challenge even when we go higher in terms of gear and tcp.
Now rewards can be similar to babel. One time clear reward that's really foken good like if u beat the last stage u get something really useful. Like a +16-17 booster or an elite pet. While consecutive rewards can be stuff like pet cores, origin chips, lucky fuels, t3 plat chips, vaccines, +14 boosters and good things but not stuff that would break the economy.
Let me know what you think of things like this!