The grind really wasn't that bad IMO. But then again I play a lot of Halo and took advantage of the perks a lot probably missed out on like all the free gold and Platinum packs given away during HCS tournaments and used my Microsoft/bing rewards points for the legendary boost packs so I didn't have to buy them. If you truly just play the game and unlock all the reqs using the silver to gold method and primarily using your rp boost while saving your XP boost by the time you unlock all the reqs you should have a good collection of XP boost to use for the xp grind. If you start fresh it will probably take you about two years or so to max out everything. Which isn't that bad if you think about it. Better than H4 that you max out in like two months. As far as is it worth it that depends on the individual. It's already been said that there won't be a anything big in infinite like armor so odds are it won't be worth it to most. The only reason you should have to make it to 152 is you enjoy playing H5. The only true prize at the end of getting to 152 is the satisfaction of getting there (which right now less than 1000 players have done).Can you explain how to do the Microsoft/bing reward points?
Use your gamertag email and set up an account with bing. You get points for doing their stuff online small quizzes and doing searches. You can get 250-300 points a day. You can max them out in less than ten minutes really as you can do like I do and just search a, then search b, then search c....ECT. then download the app on Xbox one as well and do the stuff on there for points, mostly just click some stuff. Anyways every now and then the "hot deal" is a $5 Microsoft gift card which you can then use to get the legendary boost packs in the store. Warzone
. Or Arena
... You can usually get two packs a month. Which is 40 legendary boost, worth it IMO.