They aren't really reluctant to list coins or tokens, are they? I think the only condition you have to fulfill is 100k USD trading volume per day.
Many coin with less than 100k 24volume are listed. They are adding new coins all the time.
Check this:
https://imgur.com/j54z2ru BnkToTheFuture 17k
NaPoleonX 15k
and many others on the page
https://coinmarketcap.com/new/ (not appearing in the screenshot )
Even newer coins have been listed.
The only reason for not being listed, I think is "Coin Has A Lazy Team" , unfortunately.