Achievement: Hero in Need (low/high level FFXIV dungeon & guildhest)

Seeing that adding an extra FFXIV DPS to low/high level dungeons might be a bit difficult coding wise, how about an achievement? 

We are in desperate need to encourage high level players (50) to partake in low/high level content. 

There are various reasons for that, plenty of people hate being synced down or it takes a long time to complete for the lack of real reward etc. 

Suggested achievements details:

Dungeon Hero In Need Complete 500 low/high level roulette dungeons as a hero in need.

Players must play as a role that is currently in demand and use the low/high level roulette option only. 

Guildhest Hero In Need Complete 500 guildhest roulettes as a hero in need ffxiv gil.

Players must play as a role that is currently in demand and use the guildhest roulette option only.

Rewards: Mount/special outfit/minion etc

I honestly feel a mount/s would be the BEST reward that would attract the most amount of people. The number is high to really fill up the roulette consistently. This would encourage play during all sorts of hours, make sure people are taking part in old content when FFXIV Heavensward is released AND help new players who might feel forced to play as a role they don't want for the sake of getting INTO content. 

This will also give a stable reason for high level players to log in and complete their roulettes.