The tos is quite explisit on this case, strikepacks in its own is not the criminal here, its the mods/macros/... a dominator for instance has a competition mode, then no mods can be loaded or similar into it then its just backpaddles, I used this on PS4 season 3-5 (in competition mode) until I got myself a proper elite controller, because well budget issues 😃 if you check the tos: https://tos.ea.com/legalapp/WEBTERMS/US/en/PC/
chapter 6. rules of conduct, on of the bullets there are:
- Use or distribute unauthorized software programs or tools (such as "auto", "macro", hack or cheat software), or use exploits, bugs or problems in an EA Service to gain unfair advantage.
This would also count for mounting mouse and keyboard to a chronus zen to get mnk with aimassist, that is an exploit enabled by an external tool.
Just a side note, some of the elite controllers can also use mods, but they still legal as long as you dont use said mods. In general I hope an official can comment here regarding the strike packs now as there been an intensification in the heat for said strikepacks, and especially the chronus zen so I do not know the latest policy of EA, what I did was get an elite controller without mod support and just be done with it and not wonder if I was walking in gray area world anymore - dont want to get banned 😉