As for ghosting issue there is no reason why this can't be trimmed up to match 1.1.92; now it might not be possible to improve it much better beyound that due to the original design.
As for controllers? You can run steam(vive) controllers with Lighthouses by changing a steam config to run them without headset tracked.
An interesting possible option to add tracking to the pumax 4k/be models. Mighr be the Vive tracking puck & of course pimax can likely make a laser tracking clip on for the same idea.
Keep in mind those who invested in the Vive would need to replace headset & controllers with buying the Vive Pro; if they want to take advantage of Lighthouse v2.0 - Since Lighthouse v2.0 is only compatible with Tracking v2.0.
Now Tracking v2.0 sensors are backwards compatible with v1.0 lighthouse.
*** & who knows as for new housing upgrades as the Team knows many are not shy on modding; so they might release a do-it yourself headset frame to transfer the guts too.
But until something officially posted; its all just speculation.