Honestly, it has jelly in it which surely can't appeal to adults? Everything else in it, fine. Traditional recipes does not include jelly apparently.
I can see why children might like it if it is non alcoholic. But I just think the overall combination of cream, custard, sponge, fruit and jelly is revolting!
In case you ask, I have tasted trifle before, shop bought and home made by a competent cook. Can't be persuaded I'm afraid.