Sometimes I like to ping MIA for other lanes, so I want the ability to if top and mid disappear at the same time (since they might be prepping for Rift Herald or 5-man bot gank) so I can warn my team.
Also, I like to use the pings to indicate the likely path of my lane opponent. For example, if my top-lane opponent goes missing and mid is over-extended, I will:
- Ping MIA in my lane
- Ping Danger in the path they will likely take (i.e. through our jungle, behind my ally)
I will often issue a ping twice to ensure that my allies notice it. This is most common for MIA pings, but I will often do it when I want them to disengage (since I know they are about to get ganked).
Then again, I typically jungle so I'm watching the map more than most. I don't always have to gank your lane to help you out.
Honestly, toxic players would just alternate pings if they wanted to spam you. It isn't much effort to alternate blue and yellow pings.
I'd much rather have the ability to mute and/or hide pings from specific allies. If the player is ping-spamming others to be toxic, they aren't going to have anything useful to communicate anyways.