Finally managed to make a flavor that's more than tolerable, at least to my tastes:
10% Belgian Waffle (TPA)
8% Blueberry Extra (TPA)
2% Brown Sugar Extra (TPA)
Rest is PG/VG/nic to your preference, I used 36mg nic (VG) @ 33% and PG @47% to end at 12 mg/mL. And I don't notice the brown sugar so much, but it smells really good, so I added it
10% Belgian Waffle (TPA)
8% Blueberry Extra (TPA)
2% Brown Sugar Extra (TPA)
Rest is PG/VG/nic to your preference, I used 36mg nic (VG) @ 33% and PG @47% to end at 12 mg/mL. And I don't notice the brown sugar so much, but it smells really good, so I added it