Signal can be exposed to function like store in Svelte. This is handy for things like receiving data from websockets, coordination, etc.

NodeRef should be made a signal in situations like canvas drawing so that use can use effects to draw.

I had to make these modifications on sycamore (just a couple of lines actually) to make my sycamore gui project work. (I transitioned from Svelte)

I'm a newbee. These are just my humble opinions.