The last time I played in a limited club tournament, it happened to be 4 clubs. After a ton of thought and scribbling, I took a 5 wood, 7 iron, 54* wedge, and putter.
I hit the 5 wood TWENTY-ONE times; 14 tee shots, 4 second shots on par 5s', and three second shots on par 4's. No decisions about laying up off the tee. No decisions about trying to cut a corner off a dogleg. No decisions about going for the green in two on a par five. And my goal on approach shots wasn't related to much of anything other than playing AWAY from bunkers; risk-reward was out the window. I couldn't reach many, if any, of the fairway bunkers off the tee, and from the rough I just had to get the ball back in play as best I could. Literally, my goal going to the first tee was to try to have a par putt on every hole, regardless of distance, and to avoid double bogey.
If that is your idea of enhanced decision-making and strategy, then I think I see the game differently than you. At my course, when I stand in the fairway on 18 and the pin is on the front just over a really tough bunker, I have a decision to make, and the decision centers around hitting a 7 iron at the pin, or taking an 8 or 9 and playing away from the hole and then trying to get up and down. Wind factors in, my lie factors in, how well I'm hitting it factors in, and what's at stake on the various bets factors in. But if I don't have all three of those clubs, and therefore choices, available strategies are REDUCED, not enhanced. Same with the fairway bunker on the inside of the dogleg on 9 and 11. Same with playing a cut off the tee on 10. If you limit the clubs, you limit the choices for those shots. You just play away from trouble; you don't take it on.
Look, I get it that you have to play golf differently with fewer clubs, and that you have to think your way around the golf course in a different fashion. That can be a cool exercise, and coaches of HS and college teams sometimes do that with their players, making them play without a driver, or without a lob wedge so they see the course a bit differently instead of just playing "bomb and gouge".
But the idea that somehow strategy INCREASES when there are fewer choices is just silly to me. Where else is THAT true, in ANY sport, much less golf? Is a hole with FEWER architectural features MORE strategic? Is a green with LESS contour MORE strategic? The number of available choices increases decision making; it doesn't decrease it.
(And one final note: Those of you that are talking about executing the same swing over and over, except with a different club, can stop writing that; you aren't that good. You WISH you could make a good swing over and over, except with a different club; this is NOT the way you are playing! You can insert either a smiley OR a frowny face emoticon here.)