It may not be a bad idea in terms of room size and shape, but generally the treatment strategies are quite different.
Think of it this way: sound travels roughly 1 foot per millisecond. In small rooms, this means we are generally hearing first reflections within 20-30ms of the source, which is close enough in time that we generally don't perceive distinct echoes. Instead we can hear the artifacts such as comb filtering and other nasties.
In a concert hall, however, we may not hear an early reflection for 50-100ms or even more. Since sound goes down 6dB every time you double the distance, the reflections will also be much softer, in addition to being further back in time.
Also, for the larger room, the modal issues will be so low in frequency to not be much concern, unlike a smaller household room where the resonances are higher and within the audible bass range.
Generally for larger rooms it's more about controlling reverb time, whereas in smaller rooms it's more about bass trapping and early reflection management. In both large and small rooms creating a pleasing ambiance is also important.