Maxperson
Morkus from Orkus
You would also have to halve the number of hit points all characters have and halve the martials abilities as well. Half the encounters requires half of all the resources(not just casters) that PCs have.Balancing the game around a trash encounter video game grind is WOTC"s fault. People aren't running that many fights because it's not fun or engaging. They're largely risk free and pointless in terms of stakes, existing only as an attrition grind. You could halve spell slots and halve the number of fights and the game would be better. Their own adventures aren't even following that model.
If people aren't running that many encounters and are going against game design, it's their fault the game doesn't work. The options are suck it up, change it yourself or play a different game. You can't expect the company to fix your mistakes for you.