so pinging may not be enough

Pings are not always taken into account, it's like the story with the shepherd who keeps screaming ' wolf wolf!! ' all the time but when people show there is no wolf so when the wolf shows up he screams bit everyone thinks he is lying again and they don't show up to help.

Some people excessive pings can become ineffective while some people don't ping enough to really warn you about a threat.

This isn't the problem tho the problem is that the enemies missing ping '?' Isn't very effective.

First of all its the lowest sound ping in the game. A mia ping needs to be louder and have a more distinct sound so people can get the message easier.

Maybe the game needs a different kind of ping that is much louder and clearly states the mia. Also i think people need to really type it in chat if they think that a gank maybe going bot, or top or mid. If you really want to be effective even if this small distraction may lose you a creep or two. Its definitely worth more than a double kill. I have been in many occasions ganked by an enemy while my wards were down and when i asked my midlaner he said that he pinged. I looked in the chat and he had indeed pinged once the thing is when so many pings are thrown around it's really hard to understand which ones are the most important ones, while someone physically typing, 'gank coming bot' is more powerful and effective.