I agree with the consensus here. Unless Topaz could be confident of delivering a decent DAM that is capable of competing with the existing offerings, they should leave well alone, and not divert their attentions.
Skylum made a huge mistake with theirs, and it has been in development of well over two years. They didn’t even bother improving it at all for Luminar 4.
The DAM/Editor packages that have worked well are those that started off as primarily DAM with Raw processing as a basic function, and then gradually added and developed the editing tools over time.
Topaz makes some good products, although not without their own issues - early versions usually seem to arrive with bugs, but Topaz do get on top of them quickly.
Clearly it takes a lot of resources to develop a decent DAM and integrate it into an editing workflow. Many of the big names have teased us with suggestions they may add DAM (Affinity was rumoured at one time too), but little has come of it to compete with the existing tops names.
Of course a well developed DAM/workflow manager would be very welcome.