I've always scouted based on previous successes at my team... this seems a realistic method...
I.E. I found a very promising Swedish striker playing in conference national... he turned out to be a huge success so I sent my scout to sweden for 3 months and brought back two more swedes... then I found a random T&T player that worked out really well... scouted that region and turned up jack... seems to be fairly realistic as you see teams accumulate similar nationalities quite often...
Also, I think one major adjustment to SWYCT should be that you can always scout YOUR country of origin... even a conference south team can entice a promising Italian if the coach is Italian...
However, the true LLM spirit seems to be that your sense of realism is the key... what works for me may not seem "realistic" to others and I accept that