Ok, so if I have a match and its weak in one or two traits, should I use a med to cover those traits specifically or should I just sven the whole thing? should I be trying to balance it (w a med) or just boost as many traits as I can (sven)?

I would sven if it is a very good mare, maybe use medallion if I was more unsure.

Any more input is appreciated!

LB mare(or super shiny!), I would sven. If she's not, then a med would do just fine ^^

I can't afford svens yet, but just chiming in to say I haven't had much luck with meds. I actually have had better results using glass for the specific weak trait