I have a suggestion to increase the interest of the players to the treasure maps. Due to the fact that a single map takes a long time (from 1 to 100 minutes), and because of this maps are stored and used very rarely (I have 800+ maps , and just don't have as much time)..
I propose to introduce the use of multiple maps at once, and multiplier rewards for each subsequent for example 0.7 (if you bet 5 maps , then the reward after will be 1+4x0.7 = 3.8 multiplier) and most importantly!!! to make the multiplier decrease from the number of maps for example is 0.7 (if you bet the same 5 maps , then the initial number of moves you have is reduced by 5x0.7=3.5 .. instead of starting 12 moves the player who has bet 5 maps , starting with 9 moves) it is needed to make collecting high rewards more complex if you use several maps at once, to get a multiplier.
and do not forget to put a limit on the number of maps on the basis that the number of initial moves cannot drop below 1. (on event points multiplier should not apply)
I hope my point is clear and you take to consider...
help in translation - Yandex translator =)