Third Tier

[Lokithor]

RDM :
Chainspell Recast Reduction (-1 min/upgrade)
Chainspell Duration Increase (+6 seconds/upgrade)
Chainspell Conserve MP (Reduces MP consumption by 5%/upgrade)
Chainspell Magic Accuracy (+5 macc/upgrade)
Chainspell Saboteur Effect (+20% enfeebling potency & duration/upgrade)

PUP :
Overdrive Recast Reduction (-1 min/upgrade)
Overdrive Duration Increase (+6 seconds/upgrade)
Overdrive Cooldown (lowers existing elemental burden by 20%/upgrade)
Overdrive Maneuvers (lowers elemental burden on maneuvers during Overdrive by 20%/upgrade)
Overdrive Potency (increases Overdrive effects by 20%/upgrade, doubling effects at 5/5 rank)

I like all of these suggestions! Only thing I would do would be to increase the effect per merit, especially on the recast. This is a 2 hour ability. You should be able to merit it down to 1 hour at least.

[Alhanelem]

I like all of these suggestions! Only thing I would do would be to increase the effect per merit, especially on the recast. This is a 2 hour ability. You should be able to merit it down to 1 hour at least.

a full hour off is probably a bit much, but a half hour is reasonable.

[MDenham]

a full hour off is probably a bit much, but a half hour is reasonable.

If they give the new 2hrs a variation on shared timers (you can merit either timer down, but firing off one ability resets the recast on the other to max), a combined one hour off both timers sounds fine (you could choose between "one 1hr and one 2hr" or "two 90min", or several other choices assuming 10min/merit).