The drop in ADV scouting will come naturally as you play more seasons of HBD. I have begun to drop to zero ADV in most of my worlds. You get to a point where you can use other things to assess talent, such as progressions, draft slots relative to the drafter's scouting, IFA signing amounts, etc. You also get to a point where a quick glance at a player just tells you what you need to know, it is hard to explain but if you keep playing you will get there.
The only exception I have to this is if I take over a POS team and do a full rebuild, I like to have some ADV (in lieu of payroll) as I will be more aggressive via trading to build that organization.