they are value for money
It's an interesting thought, but are they really? I don't think so. Only the top tier have value. The various relatives and hangers-on have become more like celebrities, enjoying extraordinary wealth and privilege and popping up at exclusive places the gawping public can only dream about.
I got sick to the back teeth of the Meghan and Harry nuptials and run up to the day. I don't wish him ill but I am beginning to see the 'boys' (seen as poor motherless youngsters by me at the time of Diana's death, and viewed with a fondness) for what they are now - stinking rich young men who are waited on hand and foot and have a life of privilege and luxury. 'Work' comprises of short public engagements every now and then, or tours abroad which seem to keep the masses happy.
To be honest if I never saw Meghan and Harry again, online or elsewhere, I'd be happy. I am not sure why they are feted. I may be alone in being sick to the back teeth of Beckham 'news' when that family are of no consequence. Reading about their latest expensive holiday or home purchase is a slap in the face to the well being of all those who toil day in and day out for very little and cannot afford a holiday to Blackpool, never mind a month in the Maldives most exclusive hideaway. I am feeling that way now about the royal family. It's a relatively new feeling. I preferred them when they had mystique, perhaps? 
Keep the Queen. No President for me - Beckham would be appointed no doubt.
Keep her immediate heirs. Charles and William can continue the line, but really, everyone else should be cast adrift and completely self-supporting now, imo.
I felt incredible anger that security for H&M's luxurious hideaway should be in anyway the responsibility of the taxpayer. Most families with money sort out security for themselves. Perhaps Charles could pay for it as a wedding present to them?