- Score based. (Similar to MCC)
- Long-term challenge based. (Similar to Reach)
- Rank based. (Similar to H3)
- Combination of the above.
- Other - explain in reply
There would be different ranks to achieve, like in Halo MCC. You have a huge goal for max rank for example 20,000,000. After a game you get whatever your player score was closer to the next rank. Scores would start closer together and get further apart as you go up the ranks. At some point it will take months maybe even years to level up to the next rank. Tie some unlocks to certain big milestones. Could even have a re-up/prestige system to eliminate the longer grind seen in Halo MCC.
Long-term Challenge Based
There would be different challenges which are required to level up your rank. The challenges would range in length and difficulty with some being easy like capture 10 flags and others being much longer like kill 20,000 players, etc etc. The challenges level up your progression when they are completed. At first you will level up quickly by doing challenges so can rapidly level by doing lots of smaller ones, but slows down and requires more complete challenges to level up. Would need a huge number of challenges for people to do so that the progression lasts years for most players. Maybe have more challenges than is required to hit max rank so not every challenge is required if some are particularly tough or not suitable for every player. Gives a little leeway. Could also tie special nameplates to final tiers of long challenges E.G cap 300 hills get a special KOTH emblem, nameplate or armour piece etc etc.
Like Halo 3 you can only progress if you win lots of games and also level up in ranked. Only Onyx players could hit the max progression rank in this circumstance. Your highest rating in any ranked playlist would factor into what rank you can progress to. Every win brings your score up that dictates your rank. Halo 3 did 1xp for win, 0 for loss, -1 for quit. Players would be capped at a lower titled rank until they progressed their skill ranking upwards. You could have special unlocks tied to total wins, and increasing rank.