Originally Posted by MillionsKnives
If it is important enough to measure, then weigh it.
On top of that, spices (and most ingredients) can be variable in efficacy. Maybe older batch is less fragrant. Maybe it was grown during a drought and is more concentrated. a tomato might be sweet or bland the next week etc. Chefs should taste at every step and adjust accordingly.
Your market is the people who like the idea of cooking but don't really cook.
Sorry Millions, but I totally disagree with most of what you said. I have been in the business for decades and rarely have I weighed my spices when cooking, and almost none of my chefs, when I was coming up in the business, wrote recipes where they weighed out their spices. It was all done in volume measurements, i. e. measuring cups and spoons. Baking was a whole different story though and most of my best recipes for baking use weight measurements.
I do agree that spices can and do vary in quality and potency, but this really strays from what the OP is asking.
As to the OP's questions;
-I don't find measuring out my spices to be particularly messy
-for measuring I use measuring spoons, measuring cups, various other standard kitchen items, and often will just eyeball it (after years of cooking you become pretty good with eyeball measurements)
-As MillionsKnives stated spices can and do vary, so I don't find precise measurements to be all that important (unlike in baking where wrong ratios can ruin a whole dish). It a recipe calls for 3 Tbs. of pepper and you accidentally add an additional 1/4 tsp. its not really gonna matter
-If the spices are dry then I will, usually use the same measuring cup, or spoon for everything in a recipe before cleaning it, although there are exceptions
-measuring spices doesn't take long at all
-no, I don't have a problem keeping my spices organized
To be honest, without seeing your product, it sounds like it is trying to solve a problem that really doesn't exist. There are a million gimmick gadgets out there claiming to make life in the kitchen easier and/or more organized. The vast majority of them aren't worth the plastic they are made out of and really don't solve any problem that a whole host of other items don't already solve.