The 8th overall pick, at the time, was a magic bean. Kupari is currently a magic bean.
I don't know what this means. Are you trying to argue that because you don't know what a player like Zegras was going to become, then we should write off it's value? I reject that notion. It's called projection and if you are smart about it you can be way more right than wrong.
Who do you want them to get NOW, with your conditions, that is a superior choice to a rental?
I don't know what's available but if the choice is between flushing assets for a "Cup run," that I feel has about a 5% chance of working out as-is, versus about a 7% chance if they add, I'll take doing nothing and keeping my powder dry. I'm not going to fall into this misleading trap that they are a Hertl acquisition away from being prohibitive, 2020 TB Lightning style Cup favorites. They are a long shot no matter what they do at this deadline because they are not good enough 5 on 5, they are some combination of hot special teams and hot goalie right now.
I've given examples of the kinds of players I think they should be chasing many times. I was ok with a consolidation trade for Eichel, and he would zero question be a Ranger but for the fact that Buffalo did not want to trade him here. I would be ok with a prospect swap of high-end defender for high-end center, even if I have to add (say, Lundkvist for Lundell, as an example, I'll even add a pick or another prospect or something). I would be ok with them trading players or prospects to get up in the draft for a player they love, as they loved Lundell (had him 6th overall in 2020), say for a player like Brad Lambert in the coming draft. If they have their own first and they can package a future first, or a future first and a prospect, something like that, I'm ok with that. And finally I would be doing whatever I can to mend bridges with Kravtsov and bring him back after the KHL season is over, unless I can get an equal young prospect forward back in trade.
If we simply MUST add at the deadline to appease a brain-dead owner who thinks it's still 1994, then I'm ok seeing what second and third round picks bring back, or prospects from the tier of like Reunanen on down bring back, but I'm not trading from like Othmann, Robertson, or anyone in that tier or better.