Most people probably know this, but you can’t add synonyms for items in lesson mode. Some kanji, and a lot of radicals, have very obvious visual comparisons that, for whatever reason, aren’t used as the default mnemonic, for example:
一 and one (rather than ground)
ユ and yu (rather than hook)
札 and ticket (rather than/as well as ‘bill’)
L and… L (rather than lion)
Most of the time I do the lesson for these, wait until they come up in a review, and then naturally get them wrong once before I can add the synonym.
Is there any chance WaniKani can get the functionality to add synonyms in lesson mode?