I listened to a rather good podcast from Music Matters with that very nice Petroc Trelawney, which made me think there is far more to Handel operas than I was prepared to admit.
A There was a rather nice comparison to Broadway Musicals, at least pre Sondheim. The solos, it was said, follow a set pattern just as much as Handel's Da Capo arias. What wasn't said, but strikes me as bearing in mind, is that in classic Broadway Musicals (musical comedies as my mum calls them, but she is the same age as the Queen and saw a matinee of the London opening of Oklamhoma!) the plot is never advcanced during the melodic numbers, and indeed they are effectively solos ( if there are two voices, they both sing the same melodic material).
B Now all the Handel operas have been recorded, we can work out which are dramatically worthwhile and which are just nice music. Yes please.