Thundercats was entering its 3rd & final season in 1987. Silverhawks had bombed, cancelled after one year. The same fate would befall its replacement, an anthology series that would be the last produced by Rankin-Bass.
The Comic Strip consisted of four rotating features, kind of like the old primetime anthologies that NBC ran in the 60's & 70's. TigerSharks appeared to be a more natural successor to Silverhawks as a straight adventure series. Karate Kat & Street Frogs were played for laughs, although the latter also had musical numbers included. Mini-Monsters was set at a summer camp meant for the offspring of Dracula, the Creature From the Black Lagoon, et al, but with two human campers joining the fun. As memory serves, stations had the option of airing the show as a 2-hour weekly block, rather than on weekdays, or to supplement the weekday broadcasts, so that viewers could catch up on what they might've missed. The 2-hour block aired on Sundays in New York on WWOR, as I recall.
Here's the intro:
Down the line, we will review each of the individual segments.