Like many folks my mods are a little skewy at the moment, and v3.0.2 will be here for a week so its worth updating. This led me to go and find some new ones. You can get all these from WoWMatrix and they are all Ace mods, so supposed to have low memory; ymmv.
Bags = Bagnon. I was using ArkInventory, and will again when its fixed. Till then this is good enough.
Bartender4 = great action bar mod.
Buffalo = the ultmate buff mod I have ever seen. Fantastic mod.
Ellipsis = a Dot, Hot, Cooldown, and target timer which is actually easier to configure and therefore beter than Dotimer.
FuBar = Good, but so many mods are not updated to Fubar v3.
Omen = Get it, your group needs you to have this, don’t leave the Inn without it.
Outfitter = an ok gear mod, but I’m not sold yet.
PitBull = Unit frames made very customised, and can look fantatic.
Prat = for comms/tells this is OK, but I feel its still a geek approch and could be more elegant.
Quartz = is a spell lag timer and castbar controller. Almost as mandatory as Omen.
ZOMGBuffs = there is no better way to record and control the buffs you need to give, and it learns and changes on the situation. Logic for all classes built right in.