Consider rare trigger drops for players who have access to a second console to play two characters at once (known as 'dual boxing' or 'dboxing', i.e. using a PC for one character, and an XBOX360 for another character; often involving both characters to achieve a single goal for one player). I'm not trying to see this "fixed" - nor do I think it's a bad thing - I actually think it's an interesting element to the game where pro players can really make some magic.
However, the immediate problem I see with dboxing is that it allows the dboxer to receive multiple rare triggers. I think they should consider removing the 'rare' property from certain triggers to make it fair for solo players to get as much of a lucrative chance at multiple rare triggers as a dboxer. For example, sky triggers like the 'Gem of the North' can drop once or twice from a single NM, but you're only ever going to get to lot the one if you're playing solo. This might have made sense in olden days (although ironically two drops from sky NM's is relatively recent), and I'm not suggesting a complete revamp of sky, just a consideration that certain trigs should have their 'rare' property removed.
The argument could be made, "well those players who 'dbox' are paying double monthly subscription fee's, and so they deserve access to that second drop because of their second subscription" and to that I'd say, fair argument - but I think players who manage multiple characters already have enough benefits (like inventory space, gardening opportunity, NM camping, etc). This is a pretty small modification.
The more compelling argument could also be made, "get a friend you bridge troll - then you can have both drops cause you're friend will give you the second when you need it". And again, I'd say fair argument - but FFXI is different now, there are a lot of players who spend at least some of their time adventuring alone - and those guys are missing out on more lucrative drops that could spice up the journey.
Also, it may be considered a problem if players begin to overly farm these triggers and stockpile them - and to be honest I don't entirely have a solution for that (at least not a simple one yet - i.e. if they could make a new rare type that would let you receive up to X number before you could receive no more, but I know it's impossible for changes like that sometimes).
It just seems to me that dropping 'rare' on select triggers would be a fair exchange to be competitive with dboxers and the game's current situation. Cheers!