You already give yourself one reason. Being a resident will allow you to enter properly without having a spotlight increasingly on you each time. Regarding your current situation, I don't know the specifics around overstaying during the pandemic, but under normal situations your overstay is not within the law and an interview for residency won't change that. Getting the DNI before travelling would, but that's not the purpose of the interview. So, you are paying the fine when you leave whether you have the interview or not, and being flagged on the system again. Argentina is incredibly lenient to people abusing the overstay system, I should know as I did it for 7 years, but I found the last few times I flew out they were far more suspicous.
You're using the word "interview" loosely, yes? I don't remember an interview but rather appointments to organize papers and state reasons for residency, etc.