Let me preface this with my own experiences when learning to jump. At my first three farms, I was always taught to go into a two-point several strides before the "jump", which was usually a cavalletti. This taught me to basically ride on my horse's neck, and if the horse chipped or went long I would be in trouble because I was so unbalanced over the jump. The general reasoning the trainers had was that two-points gave you a more powerful core and looked better. My third trainer actually said, "copy the riders on TV!" . . . Over ten inch fences.
When I left that farm and moved to my current one two and a half years ago, I went back to basics. NO two-point over cavallettis, jumps, anything, but plenty of it on the flat. My trainer taught me that following the movement of your horse, engaging your hips, riding into your horse and not forcing yourself into a single position every time was plenty more effective. THAT built up my core. THAT gave me balance. THAT taught me to jump.
I feel like a lot of the exaggerated positions I see, on here and elsewhere, are because people want to "copy the riders on TV!". And let me note that I am NOT talking about balanced half-seats, I am talking about people who do not change their positions over jumps. Those who are on top of their horse's neck all the way through the course.
So . . . Opinions? Sorry if that entire thing sounded rushed and confusing, I am feeling particularly rant-y after visiting a possible boarding farm and watching their lessons .