Hi David
As mentioned before a major revamp is in the works that will be beneficial to all users, I can’t release an update on plugins featuring hundreds of blocks based on one users particular requirement wishes or every time someone comes across something they would prefer an alternative to. I am just one guy and a lot of work has already been put in to them. But they are noted.
If there are major bugs a needed update for a premium plugin will always be released as soon as a fix is found. There are no major bugs on the premium ones but room for improvement certainly.
The navbar blocks you mentioned do work.
Here is an example of Navbar 5
Please use the support forums on the website for ticket requests.