I pasted a few missions into LibreOffice (11pt Arial, letter paper, 1-inch margins to match GDocs'/Ix's formatting) to get page counts.
The first mission of TOS is nine pages long.
The 22nd (Elemental Crystals) is 13.
Nume and Ilraen's first mission is 11 pages, while their third (the Pern crossover) is 31.
The Notary and Wobbles' first mission (ignoring the title page) is 22 pages (GDocs already was formatted in the way I was comparing to).
Picking somewhat arbitrarily off of your work, "Opposite Reaction Same Result " is 12 pages, "legolas, by Laura" is 10.
Since somehow I felt like more datapoints, the Cupcakes mission is 25 pages, "Shed No Tears", also by WarriorJoe (which appears to be a short one, given that it's not posted in two parts), is 12.
Then, since I have a bunch of Ix's writing saved, I have the following stats:
Over my entire archive (including interludes), which has 113 documents:
Min. 1st Qu. Median Mean 3rd Qu. Max.
2.00 10.00 17.00 19.27 24.00 56.00
Over the "typical missions" (assuming the 23 documents that had 7 or fewer pages were interludes and that the 11 documents with at least 40 pages were outliers):
Min. 1st Qu. Median Mean 3rd Qu. Max.
8.00 14.00 19.00 19.37 22.00 39.00
So, my conclusion here is that a 16 page mission is, while maybe a bit long by the standards of TOS, well within the typical length range.
(note: me-generated counts may be off by about a page or two at worst if GDocs and LibreOffice disagree about how tall the space between paragraphs should be.)
- Tomash