It takes time and effort to create a good mnemonic. There is usage involved with respect to vocabulary and sentence formation where one needs to keep the words other than the necessary ones at a minimum.
To remember the names of the planets:
- From Wikipedia: "Men Very Easily Make Jugs Serve Useful Needs, Perhaps"
- How I learnt: "My Very Elegant Mother Just Served Us Nine Peanuts"
Here, one may argue that they are opinion based, but that's how mnemonics are. Focusing solely on "opinion" aspect, in my view will deal great unjust to this community and especially to the mnemonics tag. Frankly, I love mnemonics and for just about anything I create them and joined this community primarily to get help on the same.
Do you think that at least for mnemonics the focus should be shifted from opinion to usage?
If not, is there some Stack Exchange site where I can ask such questions, or should I ask it somewhere else altogether?