In the '70s, when we ran at Hialeah and Palm Beach, there was Late Models, Hobby Cars, Cyclones, and Mini Stocks. The “Hobby Cars” evolved into one of two divisions: the “new” Limited Late Models, and the older-bodied cars turned into Thunder Cars.
In the '80s, we started running at St. Pete, Bradenton, and Tampa (Golden Gate). We had Late Models, Thunder Cars, Super Sixes, and STOCK (well, more stock than they are now…LOL) Mini Stocks. The “Thunder Cars” then split into two groups/divisions: Outlaws (after an incident at St. Pete one night…long story…LOL) and Street Stocks/Pure Stocks. Over there, on the west coast, there wasn’t a “Limited” Late Model class. At the time, we thought that was just a New Smyrna/Orlando thing after Palm Beach closed. We were still running a “Late Model”. 
Then, someone, somewhere, came up with “Sportsman”. To me, that class (at the time, I’m thinking early to mid-'90s, maybe?) was just an older-bodied Limited Late Model. Then again, a LLM looked to me just like a SLM; I couldn’t tell the difference just by looking at the two. Only way I could tell was by lap times on the track and if the announcer (if I could hear 'em) stated so.
In my opinion, classes should be differentiated not only by weight/motor/tires, but also by what they wear on the outside (body style). If you have two or three classes that look the same (same type of body), the average (or even first-time) fan won’t be able to tell the difference. He’ll ask something along the lines of “Why are these cars different than the ones that just ran?” And if you have to go into something like, “Well, this class runs a 13:1 motor with a 4-barrel carb, weighs 2700 pounds, runs 10” tires, and 54% left side weight, but that class runs a 2-barrel carburetor, a 9:1 motor, 8" tires, weighs 2900 pounds, has a full-perimeter frame, and 52% left side weight"…well, then, they’d get confused very quickly.
While we’re at it, get rid of “Super Stock” as well as Limited Late Model. Four or five very different classes is enough. Late Models, Sportsman, Mini Stock, and maybe like Strictly Stock. If you’re running a Limited Late Model, either move up to Late Model, or down to Sportsman. If you’re running Super Stock, either move up to Sportsman, or drop down to Strictly/Pure Stock.
On another note, them mid-'70s to early-'80s V-8 powered rear-wheel drives are becoming scarce. Start allowing some of the newer types of powerplants (electronic fuel injected, tuned-port, etc.) in Strictly Stock (maybe they are already, I don’t know the rules of the class). It may get to the point where Strictlys need to split into “Performance” (like “tuner” type foreign cars, if there is such a thing as “foreign” any more…) and “non-performance” cars.