Slavery, the vast majority of white men, let alone women and non-white people, not being able to vote, the VP being the runner-up of the Presidential election, and so on, were also 'deliberately put' in the Constitution.
Also 'deliberately put' into the Constitution? An amendment process. The fact that the EC was put into the Constitution in the 1700s to address 1700s issues was recognized, *by the writers and signatories to the Constitution,* to mean nothing to future Americans, so they gave said future Americans the ability to change things.
The Constitution, like any political document or act, was an example of compromise, horse-trading, unwritten understandings, and so on. Hell, the 'Bill of Rights' isn't in the 'original Constituion,' deliberately.
Also, the original Constitution was written with the understanding that political parties wouldn't form, and that representatives should vote each individual issue by their conscience and their constituents. The framers would be horrified by the idea of a party system, flabbergasted by the idea of a two-party system, and absolutely appalled by the idea of the 'straight party ticket' voting option.