Decreasing access to PvE content does not guarantee increased activity in PvP, at least on endgame. There are people who PvE because they love PvE, but, there are also who just do it to farm. How in the world would f2p compete with p2p players if their access to the latest loots, which we all know would have the highest value on the start of the expansion, is limited to once per day. No one wants to PvP if the gap between gears is too much. If the source of income for f2p is limited more than ever, there may be people would want to PvP, but there would be people who will just stop playing altogether. Those who even chose to PvP might not even stick to it if they keep getting farmed just because they don't have the means to get the better gears.

Limited access is okay up to a point, but once per day is unreasonable.