Players - "Make the zones larger SE!"
{SE makes huge zones}
Players "OMG the zones are too big, this is so annoying!"

Make up your minds, please. A larger world allows for a larger spread of nodes. It fits better, it works better.
Can you gather 6 nodes in a 15y square? Nope. Working as intended. It was only that way for 1 - 50 zones because the zones themselves were so damnably small there was no where else to put them.