Agreed - what is the objective?
Will you want to change from one color to four color?
Or would a shorter run length be any advantage?
Could custom imprints be an advantage?
If you want to change to digital, you need to take advantage of where digital is strong, and from the sounds of the first post, you are squarely in offset territory doing what should be most economical and fast on offset.
In my book digital can make good sense up to a quantity of 2000 when doing process color. More than 2000 of the same print, and your cost is higher, it will take longer, and what do you gain? Under 2000 although you're running slower (say 1000 to 2000 per hour vs. 5000-10000), you save the waste and time of makeready and the plate costs vs. conventional offset (assuming you don't have the volume for a fully automated offset press.) In a run of 10,000, offset is already cheaper, and with one-color the plate cost/time shouldn't be too much.
And if you are running one color and it's not black, I don't think the result will even look as good because on the copier you'll be changing to process color. At least I don't think there is enough demand to create much if any choice in economical spot colored toner for BW copiers/printers (have not seen it in years.) If black ink only, you could do it and it could make sense if saving labor is a big deal to you, but if you already have offset, I suspect offset can produce higher quality and consistency for a lower or equal price.