There are a number of links that could be looked into at this point.
We know he drove a White Commodore VS Series 1 on atleast 1 occasion, and a White Panel Van on another occasion 1995 (He couldn't have driven the white Commodore VS Series 1 because it was yet to be released)
He has some link to a screen printing business, he has either worked there, delivered to or from there, or handled items that were in the business (Or his own personal hobby, which could mean fabric printing items in his home).
It is unclear if he could have stolen a 'washing line' from this business, or he actually worked or has an association of some sort with the screen printing business.
It is clear there is DNA on the victims, two of the victims, so they likely have a DNA profile that is usable to determine who the killer is, they just haven't been able to get a DNA sample match. They should use the links to do some old fashion detective work and start investigating the break through leads rather than rely entirely on DNA.
It is becoming clear that they now believe an alarming number of rapes in the Claremont area may be linked to this serial rapist, and they are also investigating possible links with other missing people/ murder case (up to 16 cases narrowed down from over 20) to identify more links to the Claremont Rapist case. Hopefully many more breakthroughs follow. Its baffling though that they are only realizing the potential connections 20 years later, makes you wonder really.
What Police type of Police vehicles were driven during the disappearance of Jane Rimmer, did he disguise himself as a Policeman, or is the Policeman son theory plausible (its only 1 theory, the cars may not even match up, the Police could have been driving other vehicles during those years?)
If he is familiar with the cemetery then he obviously grew up around the area, or visited the area enough to be familiar with the cemetery, so much so he may have not only used it as his rape spot, but his kill spot too. Where he raped his victim is unclear, it is also unclear whether his rape spot was secluded, or linked to a possible tombstone that has significance to the serial rapist.
It sounds like the White Panel Van was actually witnessed in the parking lot, and the victim got a very clear look at the vehicle, so there is no mistaking he drove this type of vehicle in 1995. Whether the serial rapist owned this car, or borrowed the car is unclear, but if we know he drove a white commodore in 1996. It is unclear if he borrowed the Commodore, but it was a brand new type of car, so it must have either been a business vehicle or hire vehicle, possibly also borrowed from a friend, or even owned by the rapist himself.
Jane Rimmers body was found naked. It is unclear if the clothes were with her body, or if the clothes have been dumped or hidden in another location. But we do know she was naked from the article.
All the blitz attacks are sexually motivated. Which may imply all the victims were raped. That is unclear, but nothing can be ruled out because they have said 'sexually motivated blitz attack' so something must allow them to make that judgement. I doubt they are referencing the fact serial killers get off sexually by killing, it reads like they may have been the victim of a rape or sexual assault either pre or post mortem and the Police can determine that from the victims body.
If this killer is Mystery Man, or even if Mystery Man(MM) is Mystery Man1(MM1) which is not proven yet, we dont know if Mystery Man is linked, and we dont know if Mystery Man is 'Martial Arts Expert' or if 'Martial Arts Expert' is Judoman. We also dont know if MM is the Policemans son, or the blond guy offering lifts. Or even if he is someone other than those people who was just lurking in the area and had nothing to do with the club. He may have also in fact stalked victims from the club and been extremely comfortable and familiar with the area so was confident enough to attempt these attacks over and over again.
We have a lot more to work with. If any of the MM footage is linked the actual case there is quite substantial amounts of evidence now so this case should hopefully one day reach a conclusion.