Might be an unpopular opinion, but I'd be ok with less powerful bonuses but more often; just a little extra variance from day to day, you know? (Maybe rotating/random mini-bonus days kinda like the V-Wave or POTD? Just thinking out loud.)
Actually got me thinking about this, something like a randomly rolled weather effect every day. Sunny/clear, Cloudy, Windy, Rainy, Foggy, etc. Each with a different effect.
Sunny/clear could do a hatch speed bonus
Cloudy +1-2 interaction points
Windy 10-15% Scour bonus
Rainy 2-5% cred discount
Foggy 2-5% GP discount
Maybe rarer ones like Sandstorms and snow for gems and shiny chances like 1.1-1.3x gems and <5 Sei power.
Or even use the terrain status moves for something for rare events
And they would all fit into the pokemon vibe too to incorporate weather and terrain effects from the game in a unique way. Of course I'm not a dev but if some thought and consideration is put into it a random daily mini-boost would be great for the days in-between the major ones!