Seekers of Adoulin has too many really useful rings at the end, it's hard to choose one and so many just pick the 18% mov speed ring when the others are very useful.
If you make the reward from the end of the VR missions an 18% movement speed ring or earring, many can get a different ring from seekers and will 100% want to do VR misions to get this reward.
Mov speed is desired by pretty much everyone.