I would like to learn more about charge-lnd and your experience with it. I was thinking about setting negative fee rate to stimulate more routing and saw this example in the github page:

[example-policy]
chan.min_capacity = 500000

strategy = static
base_fee_msat = 1000
fee_ppm = 2000
inbound_base_fee_msat = -500
inbound_fee_ppm = -1000