In BFV, if I recall, it slightly adds a very minor blur on the edges of the screen but for the most part, you had full visibility and were plenty fine to still aim. The big thing was the fact that being "fully suppressed" meant being 3D spotted for a brief moment. THATS a feature that should be brought back. If youre opening fire on a distant enemy with the intent to fully suppress them and spot them for your nearby allies, then youre opening yourself up as well. And that enemy that gets 3D spotted only shows up to nearby allies if I recall. Not the whole map. So theres a give and take to offer balance.
The visual of adding a minor blurred vignette should still exist to give more of a proper visual feedback of suppression to the person taking fire. But keeping it around the edges of the screen are fine. Ive always really liked the Suppression mechanic in the recent BF franchise as it added a level of quality to the fights that most AAA shooters dont have and also offered another layer to how weapons could be balanced, i.e. LMGs with crap recoil and big mags could at least play a role in offering support from a distance to players. Much of what they are suppose to do.
In BF2042, Im not sure Suppression that offers spotting will be much of importance though since theres already 5 million ways to get spotted.