Another issue with Part 7 is that, well, from Part 1 to 6, most of the panels are just stylistic still shots. Which David Pro faithfully adapts.
But in Part 7, the panels aren't still, they have motion to them. Things are constantly moving and happening in SBR, and you can't adapt that as still shots and make it work.
Plus all that is on horses.
「STAND」fights on horses.
I don't know, I am reading through it right now and you could easily focus on the camera and ignore the horses. Most of the time you see the horses faces or the horses running. The running could be saved by just focusing on the hooves stomping on the ground, not having to show the full body on motion and just save those for the money shots. The action of the characters could be done in stylistic cut-outs, instead of showing the full scene you just show the movement and a colorful background. There is a lot of Technics they can use while saving costs and still getting the entertainment across.
They managed fine enough in the Coliseum battle in Part 2.