I also wouldn't get too caught up in curving the ball different directions, stick with a reliable pattern, you'll be better off in the long run. Tour players do the same thing, 90% of the shots they hit is with their "stock" ball flight. Zach Johnson hits push draws and Fred Couples hits fades. Having a reliable ball flight pattern is going to be more beneficial than varying the curve for every shot.
I agree with this in general and 100% on the course. But let me throw in a bit of support for spending at least some time practicing alternate shot shapes. For the longest time I just accepted that my shots were gonna be straight to fade, often with a push exacerbating how far right the shot ended up. I could literally only draw the ball on purpose with a punch shot. I felt like I plateaued and decided I need to learn how to draw the ball, sort of a semi-starting over to try to learn to feel more in control.
That's forced me to finally get over some of my mechanical issues, and I feel like I'm on a much better path. I guess my point is that while yes you can have a natural shot shape and it's good to mostly shoot what you're comfortable with and best at (especially on the course!), the different shapes can hide different swing weaknesses, and forcing yourself to practice both can help expose some of those in my opinion.
This might not be true for high handicappers, but as someone who at one point could play in the high 70s, low 80s, and who wants to go very low, it seems the OP has the experience and ability for this to maybe be of use.