Just to comment a bit on Countduke's idea:
Generally, I don't mind being able to exchange different currencies. But you'll have to be careful with the exchange rates. For example, just look at your proposed exchange rates:
25k honor = 2 PoM -> That's roughly a month of siege war, less if you're mostly winning or doing PvP arenas
36k p tokens = 5 PoM -> That's one YEAR of dailies for a really small amount of PoM
10k dreamland = 2 PoM -> If you're managing 200 points per hour per person, that's 50 hours (~2 hours per day over a month)
mems -> I don't really bother calculating this, it's just too convenient for high end players (5k mems = 2-3 evenings doing hm instances), but clearly not as easy for someone not or barely able to run hm instances. I'd rather have mems being useful for something else than mats (f.e. yellow hm stats on items again, like chapter IV) instead of artificially inflating their value.
Gist: please pay attention to the amount of work required to get the currencies (currently, phirius tokens are worst by far). Also, if the reason for this currency exchange is to boost low & mid geared players, the phirius token exchange could be dropped altogether (phirius tokens are needed for various things like shells, so the only ones that really profit from this exchange are the ones doing dailies on massive amounts of alts).
Regarding someone else's idea of letting the normal version of world bosses drop PoMs, just forget it... On some servers they're camped already by high end guilds, and that would only get worse if they were to drop PoMs (on those servers it might take months just to do one of the world boss related quests...)
