So... You want to grind for mats all the time? You can still do it.
Me on the other hand... I'll take all those upgradable legendaries that I didn't have time to farm the mats for, and max them out. Cause, you know... I'm a PvE player who likes to use different guns as often as possible. I also never liked having to farm for materials right before a raid and having a fireteam in orbit waiting for me to get those last 16 pieces of (insert random material here) so I can hit lvl 30.