Root call to open / accept / establish HRMP channel

[xlc]

Can we have root call to open / accept / establish HRMP channel?

We do have this on para sudo wrapper but it is for testing purpose only and can't be used for Kusama/Polkadot.

polkadot/runtime/common/src/paras_sudo_wrapper.rs

Line 153 in 2f4b417

pub fn sudo_establish_hrmp_channel(

Use case:

Currently, the step to open HRMP channel with a common good parachain, requires a root call to send a XCM to transact a call on the common good parachain to send a XCM to transaction a call on relay chain to init open HRMP channel.

Given a root call is already required anyway, it will be helpful to avoid the extra XCM round trip as well as the ability to avoid deposit.