I've toyed with the idea of modifying my saws. I just couldn't figure out why I wanted to do it. So I got a project saw; a hopeless saw about to be tossed into the landfill. Believe me, it does satisfy the tinkering bug in all of us. The 461 will run a 32" B&C just fine and if you find it lacking then you probably need to sharpen the chain. I run a 24" on mine and I have yet to find a log that can't be cut quickly and easily with the 461.
It is fun to run a powerful saw, and the 461 is definitely in that category. In my experience 90% of my time is in hauling, splitting and stacking the wood. To increase the power and cutting time of the saw is attempting to save time in the least time consuming task of all. You could save the most time by wearing a sweater and long-johns during the winter and only burn during exceptionally cold days. I have neighbors that do just that. They have both told me that they can usually see their breath during January and February. The guy just doesn't like to cut wood. I suggest a pellet stove, but I guess he might be polar bear or something, cause he has yet to make a decisive move to any realistic solution in warming his home.