i think there are NEVER too many ponds because i'm the kind of person who landscapes around them lololol
BUT, here's my things that make a perfect town and things that would make me reset:
perfection:
town hall/retail/plaza all within the same vicinity, circle grass (star snow!), peaches/cherries/apples (i cannot tell you how many times i've been stuck with oranges as a fruit... that perfect orange looks like a mutant), simple rivers or stair-like rivers, at least 1 big beach (i don't like when it's split 50/50 because it makes fishing inconvenient sometimes), brown or gray building roofs, 6-7 rocks at most
no-nos:
50/50 beach split, oranges (pears aren't even a deal-breaker because the perfect pear is a nice color, but oranges, man...), square OR triangle grass, 9 million rocks, rivers that have multiple bends AND multiple large pond areas within them, when retail is all the way in the top corner(s) of the map, red and blue roofs on things, plaza either isn't centered or isn't near town hall, starting villagers have houses where i want to put my bridges (bridges are always the first pwps i go for, for whatever reason), and here's a really picky one: if there is no room either in front of the river or on the cliff-area before the southern beach for me to place a cafe l8r on... :^)
i'm needy