I think a side effect of the corporate side of the game becoming more and more established is that a lot of rare items are generally staying in the hands of corporate citizens. While that's not a knock on the players or a bad thing per se, I do think there should be consideration for the effects it has on gameplay when many sets of limited armor stay primarily with corpsec in corporate towers, or many rare weapons, etcetera.
I do think that there is some issue right now with a current pervasive feeling that all combat characters must have the best armor possible for the day they will kick ass. I recall a point in time, though, that it was seen as gauche that a junior corpsec even had a katana, not the ceramic kind, because it was above their current status. The need to have the best armor will only be solved by people robbing eachother for it until it trickles up, and in addition to that, in my own opinion, by corporate sumptuary laws.
https://en.m.wikipedia.org/wiki/Sumptuary_law
While it probably shouldn't be literally called that IC, I find the concept that your rank can determine what is acceptable for you to wear or possess to be an interesting one. It makes sense within the game world, and it can have potentially positive effects on the game culture.
Limiting the wearing of high-end armor or usage of high-end weapons on duty to senior or managerial positions while your average agent must make do with ProTek and the like is not only a strong motivator for corpsec to try harder to attain higher positions, but it is likely to help alleviate rarity issues as well.
In-character, this is a way for the brass and the upper echelons of the security teams to protect their egos so that more affluent yet lower-ranking agents don't outshine them or 'show them up' in terms of expensive tacticool gear. Wearing that suit of ballistic plating is a privilege that only the elite of the elite are granted, whether you can afford it or not.