Just my opinion but the overall aesthetic of the Lake Tahoe game was the best of any outdoor game the NHL has done yet. Better than any ballpark or football stadium.
I'm biased of course but I think Fenway has been the best of the ballpark/stadium venues. It's just iconic and has all the history, and all the Boston sports teams are interconnected so it's not that weird to see the place turn black and gold for a day, plus it's not too massive so the rink doesn't feel miles away from the crowd. But even so I agree, the Tahoe game was better still. I loved the way it brought hockey back close to its roots, and of course the location was stunning. It felt special.
It would be great if the NHL could do more such games but in a normal, non-pandemic times they most probably make no economic sense - lots of setup and logistical costs and almost no crowd revenue to compensate. So I doubt we'll see one again any time soon. Glad the Bruins were a part of 2021's.