Sure, and for like a Beal trade, that could mean a random team could get him. But the teams with firsts to offer aren't necessarily looking at LMA, DMDR, Gay or Mills as that missing piece. Also note that a few teams like OKC and Houston own firsts from a number of teams. Those picks aren't part of the realistic currency for an in-season trade market. I'd say total there are probably like five or six 2021 firsts that have any chance to be dealt.
The very best SA might be able to hope for from a LMA trade is Precious or like Grant Williams and one of Boston's other reject picks. I actually like Achiuwa as a small-ball center competing with Eubanks, so it's not the worst thing. Maybe NYK, CHA or SAC would give up their first for DeRozan to make a real playoff push. But I doubt it.