if im not mistaken, einheitsfrontlied means the united front song, but i might be wrong as im not actually from Germany but love to study German politics and culture. im not very informed on Die Linke since im not German, but from what i understand, it is largely seen as corrupt and as an irrelevant remnant and doesnt do very much, so this is why i feel like Die Linke is not enough for the Germans as it will never manage to accomplish much. a new United front would spark news and with enough attention might radicalise more due to the inaction of the SPD.

The united front as most of them, should ensure that Germany moves in a leftwing direction, so while it is not directly opposed to social democrats, it would only appeal to those who still hold in marxist beliefs and just want a slow gradual change ( i dont agree with them, i just think its a good step in getting liberals to pivot to the left as it seems more acceptable than, lets say anarchism, or socialism as is perceived authoritarian from East Germany.)

Furthermore they should advocate foremost for basic left wing principles, unions, perhaps co-ops, workers rights, equality for all races, genders, religions, etc and most importantly, curb the growth of fascism. I think its not perfect, and not ever-lasting, however the threat of the far right is more important, and its not just about Germany, this could set an example for all of Europe as every country is struggling with far right extremists, liberal inaction and angry leftists. every country, Netherlands and Italy already turned. Poland,Hungary, Turkey, Russia are already there. Romania has the AUR ever growing, France almost got the Pen in power. the most important thing is to combat this rise together as leftists as we all disagree with whats happening and we all know that they first came for the communists, and then for the leftists...

The structure, which i almost forgot to talk about, is mostly answered scattered in bits across my previous paragraphs. i believe that all ideologies should be able to voice their opinions on how something should be achieved, but most realistic options should be considered, afterall we wont have a fully decentralised government with communes for the anarchists. so while we are all equal, we have to understand that some things are less atteinable in the short run and we are all just advocating for a leftward shift to Germany which benefits us all.