Since we can no longer get them from Karon's Transport Ship we have to rely on the connection time rewards.
The maximum we can acquire is 9 Treasure Map Pieces per day. Since we need 16 to make Treasure Map v1, and another 8 to make v2. That is a total of 24 Pieces necessary to attempt a v3 map.
This means it would take 3 days (Total of 27x Pieces) to attempt a v3 map. With a 5% chance at succeeding to a v3 map, there is not much in favor here.
Even if the v3 was a 100% success rate, this means it would take approximately 42 days to successfully acquire 15 Treasure Map v3, for the Power of Enlightenment Box.
So my questions to the DEVs are:
Thank you for your time and patience, I hope to hear from you soon.