You should use higher sulfate in hoppy beers, not necessarily more Ca. I often use MgSO4 to get the sulfate without the Ca.
That leads me to a question about sulfate (but first some context):
In the 4-5 years I've been homebrewing, I have not [yet] done anything at all with water chemistry. I live in the north suburbs of Atlanta, near the Lake Lanier dam & water treatment facilities, and our water is reputedly quite good.
The first few years I ran all my water through a carbon filter, but then I tried just straight tap water and I couldn't tell the difference. Beer was still good.
Then I started adding half a campden tablet to the tap water just in case (5gal batches), and while my recent beers have been slightly better, I'm not sure if that's the campden-ated water or just my improved process/ability & recipes/ingredients.
For a hoppy beer, if I were to add a full campden tablet to my brew water (instead of my usual half tablet), I would have water with more sulfates, with little else changed, if I understand correctly. Is there any downside at those levels? 1 tablet per 7gallons is higher than needed for the chloramines, but still much lower than what winemakers and cidermakers use.
I may have to test that out on a hop-focused pale ale, if there's no danger to it...