Hi,
this is a complex topic. In many years of experience, and having had the chance of studying in detail practically all the remote display systems that have been ever designed, I can say that this is one of those “must have” features, one that can make the difference between a “yes” or a “no” to a product, that in reality very few user care and even less use. The problem is that displaying a single window on a remote desktop is 5% of the problem. The rest is integration with the client environment, all sort of interface issues and huge cross-platform inconsistencies that even systems that were designed with that explicit goal since the beginning, like the X-Window system, were never able to implement well. Add to this the fact that applications are progressively migrating toward a full-screen interface, influenced by the simplicity of the mobile world and the fact that browsers are pushing this all-screen, “tabbed” behavior, because studies show that users concentrate on a single task at a time. This without counting the big-screen Internet-enabled TVs and the “computer in the living room”. I don’t want to rule out the possibility, but it seems to me that the stacked window interface has a dark future. We look with more interest to some attempts that have been done recently to “merge” different worlds, without necessarily thinking in terms of “windows”.