I'd like to see daily (and maybe weekly?) events with special bonuses and modifiers to spice up the gameplay.
These events could give bonuses to various aspects of the game. Bonus Quality points (flat or %), increased spawn rates, bonus FEPs or unusual effects like overpowered Bears spawning in caves.
Examples:
+10% Quality to a wild creature
+20% Quality to a specific craftable curio
+20% Quality to a specific forageable
+10% STR FEPs
+30% Quality to Fish (and +50 Quality to Carp)
+500% chance to find a Ruby Dragonfly
+2 Quality to all full Wine Bottles stored in a Wine Rack
A daily event could look like this:
(Daily Event) +10% Quality to Bears, +20% Quality to Straw Doll, +10 Quality to all smoked meats, +500% Irrlights
There should be no direct Quality bonuses for tools, seeds, structures, or similar progression-related items.
You could always add new events over time to expand this system.