Being a hobbyist musician, I will disagree. Just like every world champ in BJJ, all of the famous musicians that changed how we thought about music did a few things so much better than everyone that it came through in their improvising. Examples:
Hendrix - hammer on/pull off over major blues scale
Van Halen - 3 note per string minor pentatonic and tapping
Malmsteen - sweeping arpeggios
Rhoads - legato over diatonic scales
Then you look at all great bjj world champs. They are going to have 2-3 things they score with from each position probably 80% of the time; thats it. When the shit gets hot and they need to score, they dont just go with the flow and rely on a vast array of techniques. They are going to try to smash you over the head with what they do best. I mean just look at last years ADCC. Within 1 second, most hardcore fans of the sport could tell you what each finalists go to moves are. Off the top of my head:
Mendes
Lister
Palhares
Garcia
There is no doubt these guys have a plan of a few things from each position.
When I saw 'plan' in the thread title, I assumed it was about training plans, not plans from a position. I don't really think you can be effective having plans in a position, in the sense that plans imply conscious thought. You want to have go-to moves and secondary options for the common counters in all the key positions, and drill the shit out of them. You need a training plan to develop those moves, because they'll be different for every person depending on your physical and psychological makeup. BJJ definitely suffers from people attempting to learn too any different moves from various positions. This isn't about endorsing 'the basics', it's about choosing carefully what you invest your mat time in. Berimbolos are fine if you want that to be your go-to from DLR, but don't spend a lot of time working on other DLR styles if you want to berimbolo every time. I literally have maybe 20 moves I use in rolling on a regular basis, that I will go to instantly if I'm really serious about beating you. Hell, I'm curious if I can list them:
Passing guard:
- double unders
- torreando/X-pass
- cross sleeve grip standing for breaking closed guard
- hip switch Marcelo style for passing half guard
Side control:
- chair sit back take
- KoB to mount
- ninja mount
Knee on Belly
-far side armbar
-cross choke
Mount
- cross choke
- armbar
Back
- armbar
- bow and arrow choke
Guard
- helicopter sweep
- X-guard push sweep
- far sleeve feed situp sweep
- butterfly hook sweep
Half guard
- Gordo sweep
- deep half elevator sweep to double unders pass
- deep half waiter sweep
That's essentially it. If you restricted me to just those moves, it really wouldn't affect my game that much. The set is a little different for no-gi, but the core is the same. I know how to hit all those moves and have practiced them thousands of times, and if I get in a position where I can go for one I will without thinking. Everything in between is really just seeing a route to one of those moves and working towards it.
In Judo, it was even fewer. I think in my whole Judo career I only ever scored with:
- Osoto gari
- foot sweeps
- uchi mata
- tomoe nage
- armbar
- bow and arrow choke
- sumi gaeshi (once)
- pins (usually yoko shio gatame)
You don't need a lot of moves, just to be really good at a few.