Here's an example of why such questions are next to meaningless. I'm in the process of replacing an integrated amp with separates. (I'm getting a new cabinet, with somewhat limited ventilation, and I don't want to put an amp inside.)
Now, this will approximately double the cost of the amplification portion of my system, and substantially increase its percentage share of the total cost. Is the new ratio better than the old? Worse? After all, the percentage devoted to speakers, which I would argue are the most important component, will go down. Have I done something wrong? Is my system now "out of balance" until I upgrade to a more expensive pair of speakers?
Of course not.
Now, this will approximately double the cost of the amplification portion of my system, and substantially increase its percentage share of the total cost. Is the new ratio better than the old? Worse? After all, the percentage devoted to speakers, which I would argue are the most important component, will go down. Have I done something wrong? Is my system now "out of balance" until I upgrade to a more expensive pair of speakers?
Of course not.