On the front of having to repeat the same thing over and over just to get an increase while feeling burned: I am at 271 and I have hopped between many a different activities. Whether it be patrols, adventures, public events, strikes, crucible, treasure maps, lost sectors, exotic quests, and those meditation things and have been on an upwards trajectory in the power level department. This is not like Destiny 1 where you're just running the strike playlist over and over and over. You can if you want to, and I'm sure there are efficient power leveling methods but the reward loops in Destiny 2 all feed into each other and they've made it so that legendaries and exotics are in just about every single loot pool in the game so you aren't just inclined to do the same activity over and over. If you're feeling burned or tired of doing one thing, go do other things because they are just as lucrative in the power department. If those other things bore you then you just might not like the game and that's cool. They provided many different avenues this go around to increase power level and just about every night I have played I've spent time doing different things and it's been refreshing.