i would assume so in the sense that italy would be more invested in Africa and likely much richer from the rubber and other natural resources of the Congo, however this is also a double edge sword as i doubt the British would support this Italy's ambition as it would likely see another power rivalling it. especially in the colonial game as the Italians influence places like Uganda which were mostly under British influence. if however, they are successful i could see as very possible with the the belief of the potential empire.If the Italians are able to secure Congo could this help them win their conquest in Ethiopia the first time around? That would be a three front war for Ethiopia. It would also connect all the Italian colonies besides Libya to each other. Italy would have their colonies in Africa connect to both coast. Would that be very useful for Italy?
Also could Italian brutalities in Congo vary on situation? For example, a ethnic group or tribe that works with the Italians and Italianize a bit are treated more fairly or at least no more poorly then how Italy treated Naples and Sicily. On the other hand, Italy has no problem wiping out a whole tribe or ethnic village if they resist. Could loyal local elites be given privileges and benefits by the Italians? I feel like Italian imperialism inspired itself heavily off Rome which made them more assimilationist but at the same time having no issue with breaking down on people hard?
for the people of the Congo i would very much agree with your proposal, though i would say that this could lead too a more unified culture as the Italian culture could have a binding effect.