As someone who’s had the integrated package (D+, Hulu, ESPN+) for about a year now there’s definitely pros and cons to having it all in one app.
Biggest pros being it’s convenient, the bundle makes it a lot cheaper, and the 3 channels combined give it enough content to justify the price. Even as a huge Disney fan I couldn’t justify the current price of D+ alone, the same is true of Hulu, there’s a handful of shows I really enjoy on Hulu but I could never justify paying $15 for them, the same is also true of ESPN+, I only have it for hockey, if I had to pay full price for it alone I’d just buy the Knights package and wouldn’t even bother with ESPN. As single streamers I don’t think any are worth the price, as 1 site for a reduced price it’s far easier to justify that price.
The biggest con for me is I hate seeing stuff like the Kardashians, Dancing with the Stars, etc on my homepage, considering how good direct marketing has become it’s amazing Disney can’t figure out how to customize the homepage to not show stuff people clearly have no interest in. I hate having to wade through piles of crap (in my opinion) just to find something decent to watch.