With nearly 100 SLers responding, here's the results to our survey on when Linden Lab will nudge Second Life users to join Sansar, with "nudge" defined as offering specific incentives specifically targeting and rewarding Second Life users, especially virtual currency, content, or identity crossovers from SL to Sansar. (I.E., Not simply targeted advertising or announcements.) The plurality (about 1 in 3) chose "Never", but slicing the data in the other direction, nearly 55% of you gave the nudge happening between this year and 2019.
The right answer? Probably depends quite a bit on what happens within the first six months of Sansar's launch, set to happen by June 2017, and how much it cannibalizes off of Second Life:
If there's a lot of strong, organic growth of Sansar from non-Second Life users this year (in the five figures or more, let's say), and no significant decrease of the SL userbase, I think it's quite likely Linden Lab will try to keep the two worlds separate. That way, the company can build Sansar's brand apart from Second Life, with all its attendant challenges and negative press associations. (You know it's true.) On the other hand, if the Sansar launch is slow, or even worse, if it's slow while also cannibalizing into SL, better expect some hardcore nudging soon.