A. The Menorah's design was aligned with its mission. Its mission was to give the "inside" light of the Temple, to the outside world of darkness. Hence, the 22 Chalices of the Menorah's design were purposely made upside-down, positioned to be pouring unto others, rather than upright, appearing to be receiving for itself.
B. It is clear from Maimonides' drawing, and from Rashi's wording, that the Menorah's branches were straightly slanted upward, and not in a circular form. Hence, why are some drawings/makings have the Menorah's branches circular?! Even more troublesome is that the Temple's Menorah which was a declaration of honor that G-d's presence rested among Israel, is being depicted from the Arch of Titus, which was a construction dedicated to the defeat and shame of Israel?! So, let's "straighten-out" our images of the Temple's Menorah, and even of our Chanukah Menorah, which is all about our mission of being, "A light unto the nations!"