Enumerated powers means specific powers delegated to Congress, it doesn't mean there is a set number of powers that the federal government and they can't go past that limit. It refers to the powers invested in Congress by Article 1, specifically section 8, which has an important clause you may have heard of, sometimes called the elastic clause, which says:
Article I, Section 8, Clause 18:
[The Congress shall have Power . . . ] To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof.
If you'd like to go round and round on the Federalist papers or other texts by the founders, we can. I think you'll find they had far grander visions than you imagine. But even if they didn't, who cares? It's not their country anymore, it's the people's.