I'm wondering if we don't need to improve the granularity of what we are asking for. What, exactly, does "improved hauling" entail.
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So...I thought I'd just throw those out there as examples. They're very specific things which can be tested for and checked off a list. But the really good thing about them being separate items is we can decide each one's individual importance because, quite honestly - I having a wheelbarrow ain't gonna do us a darn bit of good when we have 4 dwarves with wheelbarrows run into the room to move 4 seeds, rather than 4 dwarves without wheelbarrows. Therefore I wouldn't vote for wheelbarrows themselves until "Single Dwarf Job Queueing" was in place.
Thoughts?
I totally agree with the specifics of your hauling suggestion (you really should make a separate thread for brainstorming about hauling, btw), but I wonder if the point of this suggestion voting thingy shouldn't more be to give Toady an overall idea of what most people perceive to be the larger problem areas, and then let him figure out how he wants to improve it. Not least of all because noone else really knows how much of the game works, and any very detailed suggestion is likely to be unworkable on some point or another.
I agree that more details about the perceived problems and proposed ideas would be nice, but I think we should take care to remember the subtle difference between saying "this is what I think you should implement, in this way" and "this is what we think you should improve, and here are some ideas about solutions that might work". If nothing else, it's more fun reading the latter kind of suggestions.

I guess my main point (hidden as it is under much rambling) is that sometimes it's easier from a design perspective to have clearly defined problems; once you understand what the problem is, suggestions get a proper context and you can weigh them against other possible solutions that come to mind.
Also, note that this isn't aimed at your suggestion in particular - it sounds very sensible - but just a thought I've had about the nature of useful suggestions in general.