The simple way to view Terrestrial planets is that everything scales with radius.

gravity increases nearly linearly with radius, as does ocean depth and internal heat flow.
Mountain height scales inversely with radius, so continental freeboard scales inversely as the square of radius (or even faster) - the oceans are getting deeper and the mountains getting lower.
Atmospheric pressure should scale as the square of radius.

of course, this is pure theory and our Solar system shows that location is very important too:-

venus is almost identical to Earth in radius, but has much more atmosphere, due to the way carbon dioxide behaves (Carbonate rock on earth, gas on Venus).

On Mars, CO2 is an ice, most of the time.

But if you imagine a plane 2-3 times earth's mass, it would be somewhere between 1.25 and 1.44 times Earth's diameter, so things would still be mostly Earthlike (or Venuslike), but maybe a bit wetter...