I think they are doing Last Ronin more because of Eastman’s direct involvement, rather than it being IDW and a drive towards doing that.
I don’t think Eastman is involved in the main series at all except for alternate covers.
I would love for them to do IDW proper but I think they already have too many verticals and won’t fully move out of the safe space of 80s / 90s nostalgia until they have mined as much as they can.