I suppose it depends on what you consider "acceptable". Are they correctly-detailed in every respect as any single identifiable nation? No. Can they easily be assembled in multiple positions, which many gamers prefer today? No. Are they suitably "generic" enough to be used as rank & file in large historical collections or as Imagi-nation troops in classic poses? A resounding yes.
They do require some care in assembly, but no more than most plastic kits and less than some. They also require a bit more care in painting as they don't feature the deep undercuts in sculpting that most metal ranges have today. A good friend of mine, who is old enough to make the comparison, calls them the "21st century Spencer-Smiths". I personally think they are much better then the old S-S soft plastic range (or the metal re-casts), but they do fill a niche as inexpensive, good functional troops. Here are some examples by a couple of the better painters out there:
By friend Steve Cady (Corporal Trim in the blogosphere) for an Imagi-nation project as faux French.
By RobH, slightly converted for use as artillerists
By friend Joe in Waco, TX. His bulk forces and detail of his Berwick Regiment.
Bavarian regiment de Mercy by friend Andy in the UK.
These are just a few examples of what can be done with the figures. For the cost, they are a great way to build-up a large collection or for a beginner to "get his feet -" in the period without breaking the bank.