Most players in discussion autocrew ON/OFF focus on sonar and TMA. For me most important is
countermeasures setting: always manual. It allows you to launch Chaffs and Flares which is more effective than in auto mode.
As MP game host usually settings looks:
(Auto.manual means each player have controll over this setting independently)
TMA - auto/manual
Active intercept - auto/manual
ESM - auto/manual
Surf countermeasures - auto/manual
Link data - on/off
All rest - manual
Quick launch for weapon or helo - disabled
Quick repairs - disabled
Engage with menu (from map) - disabled
Show Dead Platforms - enabled
Discussion about auto TMA is usually conducted by people who play only with or only without it. Both settings have props and cons. Auto TMA very often gives you quite good range, course and speed of target in first solution. But after time error can be bigger and even solutions aren't somtimes updated correctly. It happens in more complex MP scenarios.
In my opinion best Auto TMA profits have players who knows how to play with manual TMA. They knows how important is changing course and speed own subamrine. Most "toxic" in manual TMA is style of playing this guys who wanna resolve target solution as perfect as mathematical equation