Depends on the participants. If they're cutting-edge LLM users then yes, I think so. If they continue to use LLMs like they would have back in the first half of 2025 I'm not sure if a difference would be noticeable.
What's the difference between using llms now vs the first half of 2025 among the best users?
I'm not remotely cutting edge (just switched from Cursor to Codex CLI, have no fancy tooling infrastructure, am not even vaguely considering git worktrees as a means of working), but Opus 4.5 and 5.2 Codex are both so clearly more competent than previous models that I've started just telling them to do high-level things rather than trying to break things down and give them subtasks.
If people are really set in their ways, maybe they won't try anything beyond what old models can do, and won't notice a difference, but who's had time to get set in their ways with this stuff?