Ottawa has to push their chips in and go for it at some point. I agree that this year should be a rebuilding year. But after that, what are they waiting for? Next year (2024-25) seems opportune, with a really a good chance at getting three solid OAs back - a top starting goalie (MacKenzie), a defensive-minded but good #1 (Mayich), and a fast aggressive winger with leadership qualities (Gerrior). Mews and Marrelli will have been drafted, but will return (obviously). We have a good shot at getting Pinelli and Gardiner back for what should be their final year of junior. Good depth with Foster, Dever, Kelly, Uronen (presumably), Barlas, Ewles. That seems like a winning year.
I get the sense that Boyd wants to build a championship calibre team around Mews/Marrelli, but its tough to project out a couple of years as there will be player movement between now and then that we won't be able to forecast - a good example is Stonehouse, who up until a few weeks ago we figured would be a strong OA candidate for next year.
If I was in the GM seat I wouldn't trade any of the players noted above this year. I'd certainly trade Donoso (and have an eye towards having a viable backup/understudy ready). If management gets the sense that Mayich will return for 2024-25 (he was a later round draft pick, so I agree with OMG that the odds of him coming back are somewhere in the 60-80% range), we should keep him and trade Sirman and Smyth. We won't get much in return, but neither would be good candidates to return in 2024-25 as OAs and we could instead use this season to develop some of the younger guys.
Stonehouse should garner a good haul, seeing what you were saying about him above. With a pro contract in hand the odds are very high he goes pro next year. The only reason to bring either Sirman or Smyth back (slight preference for Sirman) is if Mayich doesn't return. Mayich would be a true #1 D-man on a good team as an OA; Sirman and Smyth would still be depth.