That would be excellent - indeed why stop at 20 years? That is an arbitrary “standard” and you must be aware that many third-party sites keep the data forever and that they will be commercially able to charge for it when it is no longer available on the free UKCH site. So I think you should reinstate and keep the entire archive of documents, directorships and other data online.
To the privacy bods who moan that the data shouldn’t be kept “longer than is relevant” I say relevance is in the eye of each beholder. It is for the reader to determine whether something is relevant to them and only by making it available can the reader judge for herself. For example, the fact that someone has left a trail of corporate dissolutions stretching back more than 6 or 20 years or has repeatedly dissolved and incorporated companies sharing the same name may or may not be relevant to a reader.