Yes, and probably also worth mentioning in the model setup section (7.4.2).

Aerosol-free diagnostic fluxes (as defined in CMIP) could be included as optional in the data request. I think most climate models will be able to provide these.

I agree with Twan above in that including aerosol-free diagnostics (as per CMIP6) that paired to the same radiative fluxes that include aerosols would be a good way of diagnosing aerosol radiative effects. I think something recently was also done for O3 in a set of experiments for TOAR so that could also be a possibility?

The CH4 trajectory always follows the transient emission scenario, so I added this to the table heading rather than making a new identical column. For radiation coupling I think a new column is a good idea. The clim2015 runs should simulate a continuous 2015 climate, so no ARI/ACI, no change in GHG forcing (CH4, O3, etc...), and no change in stratospheric forcing from 2015 levels throughout the simulation.