Parallel Heiko is proposing creating the bi-directional channel with Statemine. The approval process will be done through Kusama governance and the on-chain democracy proposal will come shortly.

The whole call will be a batch and there'll be two calls inside the batch:

• A force transfer from Kusama treasury (F3opxRbN5ZbjJNU511Kj2TLuzFcDq9BGduA9TgiECafpg29) to Statemine (F7fq1jSNVTPfJmaHaXCMtatT1EZefCUsa7rRiQVNR5efcah) to pay for fees accepting the channel request.
• Send XCM message to Statemine to execute a transaction with superuser (root) permission.

Call structure can be reviewed HERE.
Hash: 0x15b3d40a6c779094e65614b064c04c942127a56c9e41abdfed58688525615a09
Call data: 0x1802080402006d6f646c70792f747273727900000000000000000000000000000000000000000070617261e80300000000000000000000000000000000000000000000000000000b0014aef22309630001000100a10f020406020300943577ad011f0001010002140004000000000700743ba40b13000000000700743ba40b00060003009435775c1802083c01250800003c0025080000e803000000900100140d01010000000004000101006d6f646c70792f74727372790000000000000000000000000000000000000000

Msg from Statemine to Kusama:

Preimage design can be reviewed HERE (1) and HERE (2).

Call data: 0x1f0001010002140004000000000700743ba40b13000000000700743ba40b00060003009435775c1802083c01250800003c0025080000e803000000900100140d01010000000004000101006d6f646c70792f74727372790000000000000000000000000000000000000000