training a lora model VS using motion control grayscale depth reference video

I have a video gen usecase, its product photography videos in a specific niche when I use expensive models it mostly works perfectly, and now with the models like gemini omni its getting even better (tho thats not out in api so i cant use it fully) I want a cheaper alternative to for customers and with cheaper models such as seedance 1.5, grok imagine or wan 2.2. it comes out too cartoonish, or messes with object consistency and specifically when it spins the object, the back of it is totally different from the front lol so to fix these issues, would.