I think this was a good decision, however hasn't Oricon started to also record digital sales? It's included in a separate chart, but the numbers for digital albums were always much lower than the weekly numbers for physical albums which surprised me. But maybe that's because the chart I was looking at was for entire albums, whereas more people buy individual songs. Also it didn't take into account streaming, whereas Billboard does I think, and also youtube views, tweets, etc.
Yeah, all in all, there are too many issues with Oricon. Billboard takes account into everything into one while Oricon does int separately - counting it into one makes things easier to see what is popular and trending rather than checking different charts to see that.