pnp
Lapidus said: "DB" is not related to the game it's related to fm-arena testing environment and "DB 3.0" is the most recent version of the fm-arena testing DB.

Okay, so it doesn't really matter whether I follow DB 2.0 or DB 3.0? In this case I would prefer DB 2.0 as tactics there are better rated now.
What are these two different DB? If I start a new save today, should I only use tactics from DB 3.0 or what's the difference? Thanks.
What are your suggestions for preferred foot for IFs, CF, and AF? I guess right foot for AML, left for AMR, but does it matter for CF/AF? Thanks.