So here is a short scenario I dreamt up and I would like to know if you guys think its plausible.
The POD is on March 13th 1848 when von Metternich order soldiers to clear the streets of Vienna from protestors in OTL they open fire and kill 5 people though nothing much happens, TTL the troops do far more damage and many more Vienese protestors are killed by the soldiers. Enraged the crowds attack the soldiers with anything at hand and after an hour long street battle in front of the House of Estates on the Herrengasse the soldiers are all killed (or they surrender) and the revolutionaries storm the Hofburg. The enragrd and now bloodthristy revolutionaries (now lead by mostly radical democrats now) capture the royal family and most of the court and bring them to the Michaelsplatz and quickly start a number of quick trials. Three members of the Secret State Conference, von Metternich, von Lotowrat and Archduke Louis are executed on the grounds of ordering soldiers to murder the protestors, the fourth member Archduke Franz Carl brother of the current Emperor is not found guilty and along with the rest of the royal family is placed under house arrest in the Hofburg palace. The entire trials are very quick and it all lasts for barely two hours, afterwards the revolutionaries secure the rest of Vienna and arm themselves with captured weapons, the students form the Academic Legion. The following day Emperor Fredinand is coerced into abdicating in favor of his nephew, Franz Josef. Despite Franz Josefs rather conservative bent the revolutionaries manage to become puppet masters over the young emperor. A Constitutional Assembly is soon created with the goals being to forge a very liberal and democratic new constitution for the Austrian Empire. The reactionary aristocrats have other ideas however and in what is later widely regarded an over reaction to the events of March the 13th proclaim Franz Josefs brother Maximillian (who is ironically the more liberal of the two brothers) as the real Emperor.