What does Junts seek when asking Sánchez to leave and invest another president?

MadridJunts' proposal that Pedro Sánchez resign and explore an alternative to the presidency of the Spanish government, preferably from an independent candidate, has been the focus of part of the debate in Madrid this week. The initiative has an eminently "strategic" reading, according to Junts sources, although the rest of the actors do not see it as viable and some dismiss it as a "stunt". The party calls it the "Starmer way", alluding to the resignation this week of the British Prime Minister. But what does Junts actually seek with this proposal, considering that the PSOE completely dismisses it?

• Set the agenda for the debate in Madrid. Míriam Nogueras put the proposal on the table on the very day Sánchez was to explain the corruption cases affecting the PSOE and his family circle, thus focusing part of the media attention.
• Junts positions itself intermediately between the two blocs, which is what it has been trying to do since the beginning of the legislature. The party intends to distance itself from both the PSOE and Alberto Núñez Feijóo's PP. It is, in essence, a political defense operation: to respond to criticisms that place them too aligned with Sánchez and, at the same time, to avoid the wear and tear of being perceived as close to the Popular Party and Vox, with whom this week it has also allied itself to demand that Sánchez undergo a vote of confidence.
• However, this path does not imply that it is a realistic option in arithmetic or institutional terms. The PSOE completely rules out any scenario of this type and does not consider a government alternative driven by Junts in these terms.
• It also does not imply that a possible motion of censure in favor of Alberto Nuñez Feijóo is approaching. For Junts, it would have a high electoral cost in Catalonia, according to polls, where the favorite remains Pedro Sánchez.