Painting and aging materials

Hi, as new D5 user I’m in love with the super easy UI and features.
As Lumion user I’m waiting the “paint material on surface” tool as it exists in the landscape mode since the beginning.
Should it be possible in D5? not only for the landscape but also for the material assets?
I mean…a substance plugin would be AMAZING but…I guess a simple region paint would be great too, a sort of UV mapping control a bit further than the standard one.
Also an aging option for materials would be great.