You could definitely do this, but then your equipment would be different from everyone else's. This would get to be a little tricky would you every want to sell your hives, or nucs, and it could also get a little tricky if you want to buy stuff from other beekeepers. No man is an island, so I feel like we better all speak the same language! I dabble in a top bar hive every now and again, but the majority of my apiary has always been standard lang equipment. I did also just build three long hives, which receive langstroth frames. If your looking to optimize your wood usage, you could go this way. This hive takes 33 deep frames, which is basically 3 deep boxes side by side - less the six walls that would come between the boxes! I'd call that a save on wood for sure! - but then of course the top and the bottom are larger...
justgojumpit