for sp, we can see further skills for example.
and for mp.. what you said right now is the part of what i focused more. Of course, there should be competitive side of mp, too (i definetely nit againist of it. im aganist fully competitive design /which limits potential/ of mp & skipping big fun).
perks i.e. are belongs to one title of family at customization. and; armor weight & its' effect on movement speed is another title family's subject at customization. Customization is highlined main group title. And, for good dam fun gameplay; we need radical customization rework in mp's non-competetive side. This can be designed as optional (tied to server option), idk how, but we need it for sure.