Would you say they were terrible by 1989 standards, compared to say Super Link/Energon Powerlinx by 2004 standards?
Quality-wise those toys weren't much worse than most other Transformers released in that year. They're not as bad as say, Monstructor (that's a seriously underwhelming toy). The gimmick works well - each Multi Forcer can link with another member. And they're better than Super Link in terms of:
1/ Their combined modes have different heads and a different combined persona. For example, when Wing forms the top half, the combined head (e.g.: Wingwaver's head) is different from Wing's head. When Energon Hot Shot Powerlinxes with Energon Inferno with Hot Shot as the upper half, Hot Shot's head is still the same and the persona of the combined character is pretty much Hot Shot's persona as opposed to new gestalt persona.
2/ Multi-Forcers can merge into a gestalt robot (Landcross). Super Link TFs cannot. There are gestalts in Super Link/Energon - Constructicon Maximus, Superion and Bruticus, but the members of those gestalt teams cannot Super Link/Powerlinx like the Multi-Forcers can (they're a different sub-group fom the Powerlinxers).
Now considering that Multi Force pre-dates Energon/Superlink by 15 years, I think they managed to accomplish more in those little figures.They were also sold either in sets of two (e.g. Wing and Waver) or as a gift set (Landcross). The two-packs were sold for 980JPY and the gift set for 2900JPY - which means that you basically paid about 283-290JPY per toy. That's less than three dollars by Japanese standards. The Powerlinxers ranged from Deluxe (e.g.: Hot Shot) to Mega (e.g.: Ironhide) which meant that we paid approx. $25-45 per toy.