Currently Valhalla pool variable fee seats at 1%. It will remain like that for the most part unless the pool is getting closer to the satuarion. For example if the saturation threshold is 64m staked ADA and we are able to attract 20m ADA we might want to increase that fee to 2%, at 30m ADA to 3%, at 40m to 4% and finally at 50m to 5%. This is to slow down the saturation while ensuring that delegators don't loose much portion of the rewards due to the increased fee (Fee changes at high levels of stake would have marginal impact on the total rewards to delegators
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