Unless your camera is THE VERY BEST then it will always limit you in SOME sort of way. Maybe not in a way that you even care about. Perhaps the camera you shoot now has 7 fps and the best one shoots 9 fps. That's a limitation but not one you would care about unless you shot sports.
There is no such thing as an ideal camera... you want:
10 frames per second
60 Mpx
light weight
pocket-able
His-res, wide ranging zoom
¿remember when you could upgrade to the Speed Graphic and shoot several frames a minute? and hand hold it if you needed to? me (me neither).
The H4D-60 will be a good "point-and-shoot" but
it is about 4Kg with the zoom or 300, and with it you need a
Sinar P3 for when you need a full range of movements, and a
set of Apo-Digitars, all with
Electronic shutters for when you need
Pocket wizard remote operation or a
shutter-beam,
and a D3 for low light
and an M9 for your handbag
and a D-lux 4 for you pocket.
...any camera will limit you in some way.