At its Annual Business Meeting (ABM) held in London on Tuesday, IFAB focused on measures to improve participant behaviour in football and increase respect for match officials; it was agreed sin bins for dissent and specific tactical offences should be trialled at higher levels
Yup, yellow card is definitely too small penalty.
I was thinking of giving 1 match ban after 2 or 3 yellows instead of 5. It’s much easier to implement than sin bin, although sin bin has direct impact on the game foul was made, so if implemented correctly it could be better.
That’s a big if though