Sweetspot Base vs Less Intensive Endurance blocks

this year I’m trying more of a hybrid SS/Z2 base to mix things up. I’m using SSB1 HV as the foundation, but subbing in endurance on Tuesdays and Sundays. The challenge was picking ride lengths that were sustainable, as I don’t always have the time to be able to do 4+ hr rides, and I don’t both bigger endurance rides on the weekend because I work from home so I actually have a bit more flexibility when I’m home alone. Anyhow, I wasn’t unsatisfied with doing mainly sweet spot as the basis of my training, I found I had great results with building endurance. Jury is out as to whether this approach works, but hopefully this is a good balance between some beneficial z2 and sweet spot.