Really? Most Civ packs have under 1k downloads. BUG has 200k. RevDCM-based mods add up to nearly 150k. FFH has even more than those two...
Number of downloads is the least interesting part of mods.
I've mentioned this before but you seem to intentionally skim over the points that muddy your argument:
1. Smaller mods (e.g. a single civ) are rarely what the end user downloads directly. This does not mean they are not wanted. If they are included within a larger mod (if you want to call it a compilation mod, that's ok) then they would not be downloaded separately.
Take the example of Legends of Revolution. It includes new civs/leaders. The distribution of those would not be reflected in their download pages in the database.
2. Mods that undergo frequent revisions or updates will have substantially more downloads than there are people playing it. Not that it happens often, but a mod that is released in a final state would receive fewer downloads for its relative popularity.
Really? Which ones? I don't know any simple mods that are very rewarding. BUG? That has at least 20k lines of code in it; not simple by any standard. FFH? BAT? DCM? All complex. Name 3 simple mods that are interesting and fun, in their own rite.
The authors of BUG have indeed written a huge amount of new code themselves so I don't wish to discount that, but there are in fact lots of smaller mods that got included in BUG. The unaltered gameplay mods started out that way. Remember jray's UGH mod? (
link. It probably wasn't the first, but it's the one that I best remember as being one of the first)
ACO is included in BUG. It really was DanF, myself, phungus and EF who wrote that. I made some changes so it could be included more easily in BUG, but please don't pretend that everything in the BUG Mod was written in isolation for that mod. To be fair though, the past year and a bit has seen the BUG team doing more work on their own.
BAT also consists of lots of smaller graphics mods.