@simoncozens All of the original designs are long out of copyright. I don't regard it as morally objectionable to try to deliver an improved, ideally the best possible, implementation of an out-of-copyright design.
@bucknam That definitely is not the aim. But they may be of use to corporates who are currently being asked to pay annually to continue their licences.
@onpaperwings That's a little unkind when the majority of these revivals are the first VF implementations of these designs, have a greatly expanded weight range, and are often introducing cross-family relationships that are truly useful.