Option to hide Initiatives and Goals from other product lines

When I map Initiatives to a Master Feature or Feature, I am able to see all the Initiatives from a different product line. I would like the option to hide Initiatives and Goals from other product lines, as I'm not concerned with them in this particular product line. We have dozens (perhaps in the hundreds now) of Initiatives from other teams and products, and it makes it difficult to find and focus on the 15 Initiatives we've identified for this product line.