Always feel free to post skin ideas on my thread but it does not mean i will take them up.
I don't have as much time as i use too so I tend to only pick uniforms that are unusual or cool looking.
Grenadiers Guards were no named so until after the Napoleonic wars so perhaps search for a 1st Foot guards skin. They pretty much look identical to the codstream guards but with a differnt button configuration.
If your gonna propose a skin post some images as it helps alot.
I'll probably be doing another post your favourite unit you want made again soon so people can vote for them and the most opular one be made.