Here's an idea I recently thought of...

What if seasons (Spring, Summer, Autumn, Winter) had an impact on AL PvE gameplay? It would certainly make things interesting. By this I mean, the power of certain skills are boosted during certain seasons, and weakened during others; also, the weather can damage your character.

Here's how it could be:

Fireball is boosted during Summer and weakened during Winter.
Ice is boosted during Winter and weakened during Summer.
Random hailstorms damage your character during Winter.
Rain reduces the damage Fireball does.
When the weather is windy, the power of Gale Force is boosted by say 20%.
You can be randomly frozen during winter for short durations and so can the mobs.
During Spring, all bow attacks have increased power as the rogue draws in on the power of nature surrounding her.
Warriors hit harder during Summer.

Just a fun thought Wouldn't really expect this in game but it would be funny!