I'll admit that hearing that "laziness" was something being explored for Solid 2.0 also made me uneasy. Like the OP, in my case I know it's because I'm worried that it will complicate working with Solid state in the same way that React's "concurrent mode" complicates working with React state. Really, I just hate React's "concurrent mode" and I really like the simplicity of working with Solidjs' state by comparison (if Solidjs has a similar concept to concurrent mode I haven't run into it yet).

All of this is to say that my own worries aren't based on any concrete objections, but a general fear of change since I like the current approach (and haven't run into any performance issues with it). Also, without knowing exactly what you plan on changing, the idea of introducing "laziness" seams like it could be a euphemism for "async" which feels like it would definitely make things more complex. Anyway, reading your comment makes me hopeful that my ambiguous unease is misplaced.