Been using SFX and ENB and a slew of othe mods for YEARS, with my near 500game steam account, origin, uplay, etc.etc. never had banning, never heard of anyone being banned, only time I heard rumors but seen no proof of a banning caused by SFX was from "PlanetSide 2" I heard about it but never witnessed it, I played the game a few hours with SFX, never got banned,
Check my Profile (OmnipotusX) there are virtually no games I haven't played that wasn't SFX'd, I'm still going with 0 % chance of stopping, the only suggestion I can make is to not use SFX or any other mod if you plan on playing COMPETITIVELY i.e BF4, CS:GO, etc.etc. if you plauy competitive with teams/clans, I'm sure any excuse would work to ban someone whos winning, soo I wouldn't use any mod for competitive gaming, that would be stupid, I also wouldn't use any Mods for Blizzard games, they're not the most honest company around who ban people for no reason half the time, all they need is an excuse so I wouldn't use it for anything Blizzard related, thats just me tho, I know of lots of people who still do and are fine and probably always will be, but its the only place I can think that you MAY get a banning from using SFX besides competitive gaming.
It is what it is, if people are truely afraid of SFX & getting banned, don't use it, simple as that.
I'm not stopping, banned or not, I'd rather my games not look like shit then having the ability to play online with a bunch of 12 year old (mentally) assholes calling me a "Nigger", "Faggot", "n00b" or "Hax0r" all day... to each his/her own.