Dear Council,

Presently there are eight collators on Statemine, four of them are operated by Parity as invulnerables and the other four are operated by public entities.  This proposal seeks to reduce the allocation of invulnerables to two and increase the number of publicly occupied slots to eight.   For reference and later comparison, State**mint** posses two invulnerable collators and six from the public.

The rationale is two fold, in the spirit of decentralization I am suggesting we reduce reliance on Parity (invulnerables) and shift to the public.  Secondly, as a matter of fulfilling the purpose of a canary; we should try to mimic or preferably advance beyond the allocations of Statemint.

The XCM message comprises of two encoded calls:

Set Candidates to 8 - `0x150108000000`

and 

Reduce Invulnerables to two -`0x15000850673d59020488a4ffc9d8c6de3062a65977046e6990915617f85fef6d349730fe8102dbc244e7ea2babd9f53236d67403b046154370da5c3ea99def0bd0747a`




- There are currently eight collators on Statemine, four operated by Parity and four by public entities.
- The proposal suggests reducing the number of collators operated by Parity to two and increasing the number operated by public entities to eight.
- This is to promote decentralization and fulfill the purpose of a canary.
- The XCM message includes two encoded calls: setting candidates to 8 and reducing invulnerables to two.
- The proposal aims to mimic or surpass the allocations of Statemint.

#577 Statemine Collator Update - Reduce invulnerables from four to two and increase public collators from four to eight