Having a bit of time this morning, I jumped on to see if I could get a power level increase by running that stupid preservation mission. During that run, I realized just how much bungie completely ruined power progression with the whole "pinnacle/powerful" drop nonsense.
Let's go back to the end of Destiny 1 and the beginning of D2. In both cases, it didn't matter what you did, whether that be strikes, crucible, missions, vanguard rank up, etc. You were ALWAYS guaranteed a power/light level increase depending on RNG of course. So, if I had very little time to play on a certain day, I could jump on. Fly down to the cosmodrome. Run some patrols until my vanguard rank went up and boom. A guaranteed drop that had a chance to be better then something I currently had. Vanilla D2 was similar, and yes, I realize there wasn't much to do then, you still at least felt like you were making progress regardless.
That's one of my biggest issues right now with Destiny is making progress.
When this ridiculous change was made to hamper power level progression with the pinnacle system, It instantly put most casual/solo players at a disadvantage because now, they couldn't do those little things here and there that would offer increases in power by say, replaying a story mission or ranking up the vanguard. Which was another thing that also burned everyone was having those drops be reduced to 10-15 below current power level.
Locking a lot of the power progression behind higher difficulty activities is so flawed as a lot of people will simply not do them. Having the freedom of choice to do whatever and make progress is taken, pun intended, away simply to artificially extend play time has not only ruined a lot of what made this game so good in the past, but also turned a lot of veterans players away from it.
I could go on about a lot more, but for the most part, I want my time respected. As it stands right now, jumping on for a half hour isn't worth it if I can't make any progression in power level. This system needs to be dropped IMO.