But where is the fun in deciphering the meanings in that?! It would be hard to implement but would probably make it easier for people to spell

It would be a lot of fun to have a phonemic system of spelling. It would get children reading and writing sooner. As I said above, there are very few situations where homonyms lead to ambiguity because of the way language works. Nobody just utters a single homonym without some context. Context goes a long way towards resolving any possible ambiguity. That is unless one's interlocutor is bound to confuse you rather than accommodate communication. Like euphemisms and political correctness, the anger is already there in the speaker's/hearer's attitude, not something caused by utterances in the language of communication.

Ceci n'est pas un seing.