The reason I don't PvP much normally is because the devs created an all-or-nothing reward system where top 100 get a nice reward and #101
gets nothing. I'd guess there are a large number of players who have an objective to get to at least Legend 3 for the week and completely ignore top 100 since they want to avoid the scenario of ending up #101
and getting nothing in return. However, if there was at least 1 additional lower reward tier such as 101-250 with a lesser reward I would be much more interested in spending additional gems to continue PvP past legend 3 every week. More players spending gems on game content = good for devs.