Looking at the achievements for FATE grinding, I assume IF they were to add more it would be for 1000, and then 3000 commendations, so I'm not particularly hoping for new ones any time soon. I'm almost up to 900 on my tank now. I did a ton of Guildhest roulette over a few days of casual grinding for commendations. I never used any sort of begging for commendations macro, nor queued with anyone I knew trying for free ones. The remaining 400 were just 2 or 3 here & there through various instances over the last few months.

My current commendations tend to go to melee classes as long as they do their job right. Tanks & Healers get plenty just for existing.