How to make everyone happy with position ranks

Since I really like the basic idea of positional ranks I've put together a concept which shold solve almost all problems the old implementation had:

Customizability is key Since there are so many different players and preferernces in the game we need a more flexible approach to position ranks. My suggestion would be to give the players the ability to freely link together their rank positions. The linked roles share one collective rank and mmr. A few examples: fill players and people who liked the old system better can leave all roles linked together (they basicaly get the system we have now), players that main one role (let's say ADC) can split their role from the others and get a rank/mmr for ADC and one for the remaining roles, someone who can play multiple roles at the same level (lets say Top/Mid mains) can link Top/Mid and Jungle/ADC/Support together and get a rank/mmr for each link. That way if you feel like ranking on a new role you can do it without the necessity of using a smurf.

General elo splashing isn't necessary anymore Except for two little exceptions elo splashing won't be needed since fill playes aren't dependent on it anymore and if someone decides to split off a role he's okay with spending some extra time to rank it up. Exception one, players that intentionally feed when getting autofilled, to play faster on their main role again. To solve that you can track the winrate on autofilled games and if it falls low enough the player starts to loose lp on the queued role aswell. Lets say the winnrate is after 10 autofilled games below 35% he starts to loose an additional 2 lp per loss which increases until he loses the full amount of lp (and mmr) on the queued role aswell, at a winnrate below 20%. Of course this can hit someone that doesen't intentionally lose games too, but the lp loss is lower than in the current system where u start to loose lp from autofilled games at a winrate below 50%. Exception two, someone who plays a lot of games on one role will learn new gamemechanics which are increasing his skill in other roles too. To account for that you can increase the players mmr on linked roles that weren't played allot if he starts to climb lots of divisions on the main role.

In-depth mechanics of the new system Positional matchmaking seems to be working in the current system and should be applicable in the new system aswell. It could even be helpfull to determine the new ranks/mmr when a player decides to split his roles up. To prevent boosting the highest rank with the splitting/merging roles mechanics there probably needs to be some tweaks in the system which handles those cases. But since i don't have any information on how the positional matchmaking is currently implemented it's hard to make suggestions there. In case of swapping roles in champselect the player will still get the lp for the assigned role. This way someone could boost his lower ranked roles, but it isn't possible to cheat on the highest rank. Boosting the lower ranked roles isn't really a problem since the mmr will quickly climb and the matchmaking is balanced again.

In case of this getting realized, it must be clearly comunicated that players who like the current system don't loose anything, since when leaving all roles linked together nothing changes for them.

I hope that I've presented the concept understandable (since English isn't my first language). If you have any questions or have found flaws in the concept, please let me know.