It might make a change from someone who has never met the deceased coming out with a load of platitudes and drivel, I've been to funerals where I hardly recognised the person being buried (despite being related in some cases)
My daughters’ mum had a very strange ideas/fantasy about her own funeral. It was all about how many people would attend and how sad they would all be and the satisfaction she gained from looking down on it all. It was very creepy.
A lady who once worked with us was dying of lung cancer and invited close friends out for a meal which helped her deal with it and have 1 last party with her mates. A living funeral just feels wrong but each to their own.