Same and warmer - so?

Does this climate prediction of "more of the same, with a warming trend" that we got from the simple model, have any use outside of science? The quick answer is yes- there are important planning aspects to this information from individual to global scale.
More of the same means that we do not face global scale climate catastrophe in this century.
What changes we do see will be related first to ice-melt, as the dominant weather factor, and perhaps to temperature extremes.
The importance of Northern ports increases as their number of ice-free days increases. Thinner polar ice changes the sonar conditions in the best hiding place known for nuclear submarines - the U.S. Navy is already developing strategy to acknowledge these changes. Fishing effort will be able to go further north, for longer. On land, roads that depended on permafrost will become unreliable. Resorts that depend on snowpack will increasingly have to make their own.
As ice or snowpack on land melts, it can flow downhill. This ice-melt caused over half a foot sea level rise in the 20th century. A continuation of this trend is obviously of interest in Vanuatu, which is barely above high tide as it is. A half-foot rise in sea level will significantly affect hurricane insurance risk in Forida, indeed in the entire southeastern U.S.
Water that falls as rain does not conveniently store itself on hillsides or in pastures for several months at a time. California, for example, will need to approximately double its reservoir capacity for the same amount of water when it falls as rain rather than snow in the Sierras.
Northern extension of growing seasons is of great interest in agriculture, there is a lot of potential cropland in Russia and Canada.
Temperature extremes routinely kill people and livestock. Thousands have died in single heat waves, hundreds in blizzards. The warming trend makes heat exposure an even worse threat - of definite interest in civil emergency planning.
Yes, knowledge that the average climate is warming while staying with the familiar cycles is important. Detailed knowledge of rates or of local changes is of definite interest in many places, and in some places can mean physical or economic survival.