In other discussions of popular sires, it has been pretty well agreed on that based on the number of basenjis registered in a year, a Popular Sire, is any dog that produces 100 or more offspring. By this definition Djakomba's Spotlight is absolutely a Popular Sire. Also, you are incorrect to say that the only offspring of his that was significantly used was Sukari's Spot The Target. That is just not so. In fact, Reveille Boutonniere is a great-grandson through his daughter Aleika's Destiny dam of Juju's Pistol Pete. Aleika's Destiny is behind several recognizable names you will find her in the pedigrees of several kennels through other offspring besides Simba. Arubmec's Lady Liberty is a Spotty daughter is the dam of Arubmec's Jon Luke and behind many Arubmec dogs. There are actually several Arubmec dogs that go back to Spotty, Pat Cembura used him a few times. Calypso Blaze of Glory and Calypso Bassanova were used in the Calypso breeding program. Djakomba's Solo Spotshot is behind several Akuaba, Akili, Hacker and Rafiki dogs. Termay's Killarney is behind Schaumburg, Kudabin, Farouk, Mata Hauri, Bushbabies, Calypso, Reveille and Serengeti.
In fact if you look at the Reverse Pedigree function of Sally's website you would see that Djakomba Spotlight has had a significant impact on the genepool and can be found in pedigrees for Kenset, Klassic, Nyanga, Sirius, Kibushi, Explicit, Sundiata, Arubmec, Jaroufa, Wyoland, Thor, Itzyu, Serengeti, Rugosa, Mata Hauri, Apex, Calypso, Terrarust, Dakarai, Viento, Jasiri-Sukari, Tamsala, Meisterhaus, Lacada, Echelon, Akuaba, Explicit, Berimo, Taji, Tomar, Kazor, Astarte, and the list goes on and on.
No matter how you look at it he was a Popular Sire and he DID have a significant impact on the genepool and is behind many, many dogs today.