Yes, there are many problems, some of which could be solved without a Constitutional reform, some of which would need one, the redistribution being on of these.

However, given that five Regions essentially don't engage in such redistribution due to their special status, and given that it is a widespread opinion that this special status is just for historical reasons -- making very little sense today -- I think that a constitutional reform may be on the table soon.

The Veneto referendum is a good demonstration that these issues have widespread support from all the political spectrum.