Nah. I had 2 of my characters to 305 last week and got my Warlock to 305 this week as I was waiting for a bond to drop to finish it off. Now I don't have anything to do and will probably only play on Tuesdays unless someone needs me for a nightfall run. If they make the raid the only way to get max level in the DLC, I'll probably quit playing though. While there is 8-9 people in my clan, no one is ever on at the same time long enough to even do the first raid. I don't think they'll do this, but there is speculation now that updates on all 3 platforms will be simultaneously released. Then again if they want to keep selling to casuals, they probably won't if they keep the level and power requirements to do missions and content in place.
I think the light increase will give me another reason to grind. There is a some quality of life updates coming out soon that will fix a lot of empty instances for solo players, and improved rewards for strikes, which will be good. I'd like to run strikes with friends, but we all agree there is no point right now when you can just farm public events for the same thing.
I think its pretty cool everyone will get to see the lighthouse now that never could get to it in D1, learning about Osiris will be cool, but I'm more excited for the second DLC and Rasputin. You actually reactivate a war mind network on Io which gives Rasputin expanded access to the solar system. There is a side adventure I mentioned earlier that dealt with this. If you're interested in how it may connect here is a neat video.