30 deviation = 90 shown rating decrease. This is incredibly inaccurate and probably destroys the system’s accuracy entirely especially for top players that may play a single game a month if that. Rating decay (which is still a bad idea) but if it were implemented, would need to be something like .1 sigma a day with a cap at +350 sigma total or so. Would take 7 years to reach that cap but whatever. Possibly coming into play once 3 months of inactivity is hit.
“ If players want to manipulate their rating, they can do that now in the span of a few hours” ok and you can go commit murder if you wanted to does that mean it doesn’t matter if I mandate every person in the US open carries? Rating manipulation is always bad. Don’t make more happen.
Honestly no idea how linking to a thread where I explained the exact same solution I explained here does anything. Are you a robot that does the same bad idea again and again in the hopes that this time I don’t post?
“ Increasing the uncertainty of the skill level for players who haven't played in a while is a very reasonable thing to do that isn't misusing the system. If anything, it makes the system more accurate”
Prove it. The scenario you linked is exactly the worse case scenario I mentioned which is the only person reasonably benefiting from a decay system. And even then he came back after 7 years and lost around 200 rating. That’s practically an order of magnitude leas extreme than your proposed decay rate.