Can someone PLEASE develop a similar addon to "Add Multiple Pages" for 5.7?
There is a release in github to download, just make sure you rename the folder to just 'add_multiple_pages' when you put it in your packages folder.
It's actually at lot more complex to do this in 5.7.. not because the API is harder to use, but it has to take into consideration any default blocks that use the new composer block mechanism. Ultimately it's more powerful though.
I've gotten it to work quite well, and it will allow you to set up default attributes based on the actual page type, but I'll admit it's actually a very hacky solution... I've had to use some of the dialogs from elsewhere in concrete5 and hide bits that don't make sense.
So as this is very fresh please use with caution, perhaps on a test site first and take backups.
I'd love others to help tidy this up on github.
It feels a bit too hacky for the marketplace, but if someone points out a better way to do this I'm happy to put it up there for free.
This looks very interesting, thank you.