Yeah. Based on my personal experience I think some kind of hybrid of old-school imperative retained and declarative retained, both with granular reactivity is probably the correct balance for "serious" high-utility desktop applications. Declarative approaches are great for smaller components but become a nightmare for anything much more complex than a relatively simple mobile app while imperative requires a lot of extra legwork at the component level, and as I understand (which may be incorrect) immediate mode makes certain types of optimization more difficult.