So...let's just imagine I want a Power crystal, which isn't available in any weapon available to my class at the 5man tier. If I ask if I'm allowed to roll on other people's tokens to mod rip...do you tell me I can't and brand me a ninja? Do you ninja roll against me? Do you tell me I'm not allowed because you don't think I deserve a shot at the reason I signed up for the run?
If I paid loads of credits it out gear a place, and I just want things for cosmetic reasons or companions, why shouldn't I get my 25% shot to win anything I might want?
You do have the option to break something down instead of selecting need If all you want is a part or component. But some people actually need the actual piece as an upgrade so why deprive them of that for a part or piece that is usually obtainable by questing or class story quests?