Perhaps the Windsors could pay an annual substantial lease fee to remain heads of our monarchy...
Or put it out to tender to the highest bidding family...

That might appeal to tories...

It'd be really cool if a wealthy Sikh family took on the role for a few years...
The music and pageantry would be far more lively and colourful...!!!

...and, if royalty was run as a franchise like McDonalds
we could have a local royal family in every town,
and motorway service station...
Each with it's own bouncy castle and royal garden party venue on the grass behind the car parks...