dont forget the locate city bomb:
I must say, I've never seen that one. That's pretty impressive. Not quite as impressive as the attacks that could wipe out the entire cosmos due to dealing more hitpoint damage than the number of atoms in the universe (by several orders of magnitude), but still amazingly elegant. It is strange what happens when the old 3E char-op boards got
bored of inflicting infinite damage, and just chased "largest quantity of non-infinite damage". It taught me new things about advanced mathematical notation.
Still, as for the whole issue of common sense...
Common sense is a terrible thing to base game rules on. Mostly because, well, it is a terrible thing to use in a discussion. Common sense is better described as "heuristic bias", the sum total of assumptions and axioms humans use as shortcuts to avoid the tedium of rational thought and logic. It is fast, crude, incredibly prone to error, and never alike among any two individuals. It is very useful in many ways, but it is absolutely terrible as the basis for settling disagreements between people. It is fundamentally impossible for a disagreement about a matter of "common sense" to be anything more than a futile shouting match. It is much better to be able to point people in the direction of a rule and resolve things easily and peacefully.
There is also the issue that, as both a DM and player of D&D, the last thing I want to do is worry about rule ambiguity. Everyone playing the game has enough to worry about. Simple questions like "can you equip and benefit from your
boots of elvenkind without compromising your full suit of plate armor?" should not involve vagueness or require a DM ruling. DMs and players should be able to devote their time and effort to the fun parts of the game, not towards patching up an incomplete ruleset just to make it work.