I'm thinking of a mod (preferably FuBar plugin) that simply lists by day what instances will reset for the current week. Maybe also include Darkmoon Faire and where it's located. Kinda like this (EU cycle listed):
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Monday:
Darkmoon Faire (Elwynn Forrest)
Tuesday:
Ruins of Ahn'Qiraj
Zul'Gurub
Wednsday:
Blackwing Lair
Molten Core
Temple of Ahn'Qiraj
Thursday:
(None)
Friday:
Battleground Weekend (Alterac Valley)
Saturday:
Ruins of Ahn'Qiraj
Zul'Gurub
Sunday:
Darkmoon Faire (Last Day)
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Options could include Events being listed in short-form (Zul'Gurub > ZG, Battleground Weekend (Alterac Valley) > BG-AV etc)...