So 100+ point wingers like Mikko are easy find now?Petterson is a center, 2C behind MacKinnon, which is a more valuable/important position for constructing a team. He would also replace Mitts, so that would help to balance out the books some. Wingers are easier to find, and a good winger becomes better with a good+ center, especially if we find a stylistic match.
Spending a ton of money on a winger who does not "drive" his line, and who's numbers benefit from other players is not optimal.
I advocated to trade Mikko to afford more depth. However, I recognize the potential of Petterson as part of a larger remake of the team, which in this case makes the core younger. In my view this is a separate opportunity from the Mikko trade, in that it is a result of Mitts not properly filling the 2C role. If we could trade Mitts, Colton, and Wood for Petterson we'd be clearing some less effective players off the roster for key component for a Cup winning team.
If you advocated for Mikko to be traded to afford more depth, but now think swapping Mitts, Colton and Wood for EP is a good idea, dont know what to say to you - how exactly cant you see that would be polar opposite to why you traded Mikko in the first place.
Sure you could argue that Mitts, Colton Wood are not good enough - but how exactly swapping them for a single player improves depth, i fail to see.