I didn't mind the time frame...so far.  I didn't actually spend a key till just yesterday.  I'm glad I had the time for theorizing and trial runs.  Without that time I'd have barly got first chest on normal (given my results of trial runs on day 1).  I still didn't use my 3rd key b/c I don't have silver to gear the team.

But I do imagine that down the road it will become an issue as I settle into my teams.  Not only that but the rewards being only weekly will bite.

On the plus side, I'm actually glad that this is not something that I have to do everyday or even every 2nd or 3rd day.  I'm able to spend the time when I have the time, and it takes a bit of time if like me you're doing this on manual.

The delay does not bother me too

I  enjoy  It  really  it  leaves  me  time  to  get  other  champs  ready  for  the  battle  

Yes Lord.  I went through 50M silver last week and I'm broke now.  I need to gear 3 champs and regear 2 others for my 3rd team.  Which hopefully will be my best.

Bringing it up to a shorter time span will in m ymind only results in it being another time-intensive task. 

With these 3 keys as they most likely have to be played manually, it is another 1-2 hours added to the already present content. Reducinng the time span would increase the time needed to be within the game.

So far I thought that this is something nobody wants. 

Please do not make this faster until you implement a way to make this auto-runnable consistently. I do *not* want to be spending a few hours a day manually running Hydra just to remain competitive.