For SMN tier 1:
Change attack from +3 to +3%, consistent with m attack.
Spirits... Just give em tier 5 spells tier 4 AOE, leave merits alone.

SMN tier 3 ideas
Pet weapon delay
Pet subtle blow
Pet movement speed
Pet double attack
Blood boon rate
Summon fast-cast
Phoenix: 2hr summon, each tier adds reraisega tier, tiers 4 and 5 add raisega.