Advices on : How to resurrect the fun in league

• #1 : Add more possibilities to customise stats
• #2 : Add the possibility to choose some special stats like Quintessences (Movement speed, lifesteal, spell vamp, health regen, etc.)
• #3 : Reintroduce AD and AP ratios for most of the spells
• #4 : Add various items with stats but with new non damage related effects
• #5 : Bring back boot enchants.

This would be sufficient enough to bring back a lot of the fun league of legends lost.

this thing guys was one of the most interresting things riot added to their game and which they suppressed :

https://leagueoflegends.fandom.com/wiki/Quintessence

One of the biggest reasons why people get easily bored it's because the number of ways to play the same champions is limited. In the past you could play ap kogmaw and it was as good as the ad kogmaw. There was way more diversity in the past even with less characters because there was an infinite number of viable ways to play the same champ.