Actually, I tend to agree with Bresando here. What makes "universal systems" challenging, is that it's not always clear what you should be aiming for, while classical openings usually have clear-cut objectives.
However, maybe we need to be more specific here, as some universal systems are much simpler than others. For example, the Colle is pretty straightforward (basic development scheme + push e4 and launch kingside attack) - same for the Stonewall attack (put a Knight on e5, bring the queen + rook on the kingside, checkmate...). Others are way more difficult to interpret (modern defence, King's Indian Attack) and require a higher level of positional understanding.
Overall, I think the main "trap" of universal systems is that they may comfort you with the idea you don't really need to take into account what the opponent is doing, which is an essential chess skill to develop, while classical opening force you to take care of this very early on. Now, if you don't fall in this trap, system openings are a way to reduce the amount of opening knowledge required to reach playable middlegames.
I was talking about OTB competition, and getting better at practice speeds of G/5, up to G/30 with (a five second delay).
If weaker players want to "win games" and "push up their OTB rating," my suggestions will work for anyone below @1800 USCF.
And it's much less demanding of your time.
Correspondence Chess is a "whole nother" kettle of fish. Presumably that's about the great mystery and beauty of chess, and the Claude Shannon number of possible outcomes.
All your post proves is that chess players are an eccentric lot, holding very strong opinions about the nature of the game, and all its phases.
And yes, we are all fairly contrarian.
But my suggestions are for the 90 percent of active tournament players who can't seem to make it into the "A Class" USCF.
Your rebuttables are mostly about "how the GMs suggest we should play the Royal Game." So what. We are probably both correct.
But you are wrong about improving lower ranked player's rating. These players mostly "burn out" before reaching the "A Class," partly because of this "purist" advice to study only classical openings, that everyong keeps telling them. So they play into a maze of tactical complications that their opponents have already studied.
My advise was very general. Lots of flexibility to choose your systems, and AFTER you become stronger, then simply switch into all the classical (and popular) and "big theory" opening systems.
That's pretty much what you are want to suggest above. But you're too busy "refuting" me.
Whatever.
Everbody plays the Sicilan, , Nimzo, KID, and double e-pawn with white. Suggesting that lower rated players start in those systems just keeps them getting beat and going back to "the coaches" with money in hand.
I suggest delaying this study until later, when you are more knowledgeable. It's entirely your choice.
"Universal Openings" save lots of time (initially) and let's you concentrate on getting stronger in the middle and endgame, where most games are won or lost.
Most classical opening systems can be completely bypassed by starting with narrow opening repetoires. So do it. You can always expand your opening repetoire at a later date. The assertion by some of "the coaches" in this thread that narrow openings stunt your chess development is bogus. Any opening that you study, and learn well, will surely help your game.
I didn't say "memorize." I said learn them well, and learn their thematic middlegame positions. You need to play an opening (any opening) repeatedly if you want to learn its nuances.
Games are decided in the middle or endgame. Openings (writ large) are mostly a "black hole" for the study time of lower rated players.
The OP essentially asked "how to get booked up" against higher rated players. You suggested he do it the old fashion way ("according to the chess coaches").
I say nobody needs a chess coach to reach the A Class, USCF. But you still have to study systematically the openings you choose.
Your assertion that "universal systems" are somehow more "strategically complex" is very misleading. Where doesn't that idea come from? Larsen's attack, or a reversed Slave (London System) are clearly much simpler than the Ruy Lopez, and the theory is much smaller and easier to learn. Buy a couple good books on them and your'll have most everthing published (on them) for the last ten years.
I said chose openings, study them intensely, and use them until you become strong enough to expand your repetoire. The improvement flows naturally from the continual playing.
There's no magic bullet, but my suggestions are much simpler and easier to implement, and then the student is free to play "Chess Purist" AFTER he gets stronger.
But winning at correspondence chess and winning at blitz, is a "whole nother" kettle of fish. I'm talking about speeds of G/15 up to regulation OTB.