Take it from someone who owns this years R. If you have your heart set on it, then get it. I was backwards and forwards between the R and the 1299s. Got the R, wouldn't change it for the world.
Forget all this street/track nonsense that people keep banging on about. A) they haven't ridden the 2015 R on the street, and B) they are both 205 bhp machines, neither of them are going to be perfect street bikes to everyone. As for dangerous? Well f*ck me you can get killed on a 125cc machine if you're stupid.
If I had the cash to have a second bike for the street, it wouldn't be any sort of Panigale that's for sure. In fact I nearly bought a scrambler, but why buy something that will make me do less miles on the bike I already have and absolutely love?!?!
Basically, it's no more or less manageable then last years R, it's actually much better for me personally as I now have mechanical suspension, but that's a personal preference. It will need proper attention and setting up though, I aint going to lie, it's a hard ride out of the crate. But I'm a small guy, 5' 8" and 160 lbs so I needed it a little softer. No problem now though. Fuelling seems to be fine, a little clutch control works wonders at low rpm, but the gearing on the R is finer which helps a lot, I noticed this with last years R over the S. The throttle is broad and manageable too, I put the slack removal kit in there and it works wonders, but certainly more than enough range to be able to ride sensibly and safely when you want/need to.
If you want it, get it. You won't be disappointed. It handles everything on the street just as well as the 1299s for sure and on the track it's off the chain.
Ultimately,
it's just down to personal choice. Don't let these forum conversations put you off. Yes it has quirks, but so do all the rest. You only have to read some of the threads to hear about the woes of 1299 owners trying to re-map and change 'snatchy throttle' on a bike before it's hardly run in. The R is no different, but if you can live with it, put up with the heat and the firm ride it's a fantastically rewarding bike and for those days where you get the chance to really open it up....... well then everything I've just said will make sense