fresh-node has now Node v16 as a default (T314347) and many Wikimedia CI jobs now run with Node v16 as well (T314470).
However, one important consideration does not yet work with Node v16: legacy selenium browser tests, of which there are a lot (T256626).
So it would be great if both v14 and v16 would be available from mwcli, so one can choose based on what is needed for the given task.
Note that with a locally installed fresh, I do have the option to either run fresh-node and get Node v16, or run fresh-node14 and get Node v14. So maybe this is not much work? 🤞