The Spark feature's UI isn't as good as the others.
replyFor example, I'm not sure if it should prominently show recent workload, and unless I use MCP to manipulate files on my computer, local file manipulation isn't possible. Personally, I don't think it's going to be that useful.
Oh, I did not even know about it. Had to search for it:
replyhttps://gemini.google/overview/agent/spark/
Seems like it's still beta.