Not quite sure what you are trying to prevent regarding lasix, adjunct and "cheating"? A horse can't run on lasix or an adjunct if he's not on the bleeder list.
Alot of what you suggest already exists. There are already vet lists and lists of horses approved to be on lasix, here:
Medication lists & withdrawal times here: [khrc.ky.gov
Rules and Regs here: [khrc.ky.gov
Stewards and judges rulings here: [khrc.ky.gov
There are also rules permitting security checking in the trainers barn in KY (that's how they caught Biancone)
Scoping is $70 a horse, and every scope is a risk for trauma or bleeding. I do not agree all horses should be scoped to check and see if they bled post-race (why?) and certainly not that the racing commission should pay for it.
I DO agree that I would like to see a more strict reportage to the stewards of bleeding, medication changes, etc.
I think the frustration in players is the lack of valid information, be it shoes, med changes, style of riding (on lead or behind), etc. You might consider that race-day accuracy for those things often lays with the DRF, Bris, etc. rather than the track.