Arguably Austria became a stronger state domestically by giving allowance to Hungary after 1849 even as it suffered the humiliation of having to ask another power to step in. Afterall could Austria still be a Great Power if it couldn't even express its sovereignty over its own lands? But in your scenario, it proves that it could. This raises it's diplomatic reputation but perhaps this prestige would mask the still deep issues in the make-up of the empire. In the short to medium term, relations will be better with Russia. When in OTL Russia did help in 1849, a Bohmian noble Schwarzenberg mused that "Austria would shock the world by the depth of its ingratitude [to Russia]" This ingratitude was demonstrated in the Crimean War and this fracturing of trust weakened the conservative bloc of Russia, Austria, and Prussia contributing to the Europes of Bismarck and WWI. Witout Russian expectations of reciprocity from 1849, there is less chance of a percived betrayal of Russia by Austria more chance for Vienna and St. Petersburg to remain aligned. However, long term, the slavic populations of the Balkans are likely to still drive a wedge between them.
Bac to domestic, Austria will remain an increasingly Germanised state in turn the other ethnicities, especially the Hungarians and Bohemians will continue to resent this cultural intrusion. There is likely to continue to be agitation from these and the other groups. Whether this becomes a push for more representation, possibly even a conservative federalised state, or another uprising in the future, is unclear.