i like you
That was likely the placebo effect, as ping actually has very little effect on gameplay.
You were probably just having a good day
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Also, I might add that the MCGamer servers are already fairly centralized in the US. The last time I checked, they were located in Phoenix, AZ. This greatly benefits players in the area, which is great. For players living on the east coast, they have the ability to connect to the CA servers if they wish. Good ping for everyone!
Keep in mind that switching locations of the servers would be quite a hassle as well. Not only would it be expensive, but there's a chance that the physical servers could be damaged. On top of that, the datacenter that MCGamer currently uses is widely used by several different services, and is very trustworthy. It's not worth it cost-wise to change the location of the server.
Another thing, you should be lucky that you even get under 200 ping. What about all of the Asian players? They had their servers removed due to funding issues, and there's still a decent amount of them that play (to my knowledge).
Lastly, the players that already get decent ping would complain that the servers were moved further away from them. It's favoring one side of the community and not the other, so I don't think it would be a very efficient decision.