[PIP-17] Re-allocate PICKLE rewards

PIP Discussion

Following this RFC, this proposal seeks to re-allocate PICKLE rewards by:

1. Decreasing the proportion of PICKLE/ETH LP rewards by 5% (from 70% -> 65%)
2. Increasing the proportion of prenBTCCRV rewards by 3% (from 5% -> 8%)
3. Increasing the proportion of pDAI rewards by 2% (from 4% -> 6%)

This proposal aims to address the following concerns:

• we may be over-emphasizing the need for deep liquidity at the expense of potential profit generation;
• we have an opportunity to significantly increase TVL by attracting latent BTC capital; and
• we have an opportunity to increase protocol profits by attracting deposits to a high-earning PickleJar.

On the other hand, certain concerns have been raised against the proposed approach:

• some PICKLE/ETH LPs may not want to give up 5% more of emissions; and
• we are paying for BTC TVL using PICKLE emissions. BTC Jars are less effective for profit generation while the benefits of pure TVL are more intangible.