It's sad to see that chests, which used to be one of the most important features for progressing in the game, are now being completely ignored in all the new updates.
For this reason, I'd like to suggest adding daily rewards based on the number of chests opened, at least until this feature gets reworked.
When TL used to go Live on YouTube, he declared that chests are gonna be removed permanently. Instead some harvesting features will be introduced after the pet system goes Live.
So adding them in daily quests wont be a good idea.
But maybe a random quests everyday would be a good idea.
Like random number of battles, certain number of games played in tokenroyals ( win or loose) and so on.
The new pet system is expected to go live in a month. Adding some extra quests that could be adapted to a harvest system can still be a good idea and increase engagement. Battles and Tokenroyal already have enough rewards, i wouldn't overdo it.