The new reward system has definitely been intriguing and has gotten a lot of "retired" players back into the game to try it out.

I think the game needs to be approached in a different way now and the question that needs to be asked is do you typically play in the Champions League for the majority of the season or do you play in the Diamond league and make a push for Champions in the last few days. If you are the latter, it might be best to stay in the Diamond League. The point gap between a win in Diamond league and a Champion chest is quite large that you most probably need 5 wins or more per chest.

However, looking at your CP, you most probably have a stacked deck and should be able to play in Champions League comfortably. So maybe the best would be for you to ignore the dailies for the first few days and focus on getting back into Champions League ASAP.

IMO, the new reward system is trying to force you to play at the same level as your previous season or get you to punch up. I just restarted a few days ago from novice and now back in Silver league and I get like 10 daily chests in 30 mins. Granted the rewards aren't fantastic, but it clearly shows how the new reward system is intended to play out.