You remember wrong. SCH got significant changes every single patch since 4.0 and got repeatedly buffed.
4.05 Emergency Tactics Recast time reduced from 30 to 20 seconds.
Indomitability Healing potency increased from 400 to 500.
Excogitation Healing potency increased from 650 to 800. Duration increased from 30 to 45 seconds. Recast time reduced from 60 to 45 seconds.
Fey Union Range increased from 10 to 15 yalms. The Faerie Gauge will no longer deplete when channeling from Fey Union is interrupted.
Aetherpact Aetherflow actions are no longer required to inflict an effect on a target to increase the Faerie Gauge.
Quickened Aetherflow Reduction to the recast time of Aetherflow changed from 10 to 5 seconds.
Chance to reduce the recast time of Aetherflow increased from 20% to 100%.
4.1 Summon Cast time reduced from 6 to 3 seconds.MP cost reduced.
Summon II Cast time reduced from 6 to 3 seconds.MP cost reduced.
Adloquium MP cost reduced.
Succor MP cost reduced. Barrier effect increased from 100% to 150% the amount of HP restored.
Fey Caress When in Sic mode, Selene will now activate Fey Caress when inflicted with an enfeeblement that can be removed with this skill.
4.2 Excogitation The effect "Grants target party member other than self the effect of Excogitation, restoring HP when member's HP falls below 50%." has been changed to "Grants target party member other than self the effect of Excogitation, restoring HP when member's HP falls below 50% or upon effect duration expiration."
4.3 Whispering Dawn Action category has been changed from Spell to Ability.Cast time has been made instant.Healing potency has been increased from 100 to 120.
Aetherpact Recast time has been reduced from 5 to 3 seconds.
Fey Union Fey Union can now be interrupted to order faeries to use another action.
Dissolve Union Recast time has been reduced from 5 seconds to 1 second.
4.4 Sacred Soil The effect is now applied as soon as the action is used.
Shadow Flare The effect is now applied as soon as the action is used.
These are just a few of the patches. Honestly, SCH needs a nerf and WHM needs a buff. But people saying to return to 4.0 SCH either have an agenda to punish SCH or they don't understand the significant changes made to it.