I haven't heard a good argument from those who say battle spirit should affect these abilities. 19 votes so far, can anyone give insight to your reasoning? I've already explained why @Erondil is wrong (no offense buddy) about blazing shield being overpowered.
If health went back to 1.5 ratio it would be a 36% buff to health based stuff. With that being reversed and an 30-50% base buff to health in Cyrodiil (instead of the flat 5000 you get now), you could essentially do away with the 50% healing/shield/damage nerf completely which would be a better solution imo.
Otherwise it's just a convoluted mess. This affects that but not this, but yes it also affects this but not that other stuff.