I cannot speak for the score thing since I don't play for score but for survival.
So in my case, I really enjoyed the game, yes. The fact that there are four playable character and that you can "customize" your shottype feels really pleasant while being simple at the same time.
Do you want to insist on homing ? Then take the spring subweapon. Would you like to destroy fearies with enough strength around you ? Autumn is for yor you ! Do you want to send attacks everywhere ? There's summer aid for you ! Oh, so you want to focus on destroying the boss ? Then I say "winter is coming" !
Yeah well, the only "bad" thing I would say about the game is that the patern of the stages aren't too well worked. I mean it's nothing new. I already had the same problem in DDC and LoLK for some stages anyway, Since DDC, I don't find the patern of the stages that beautiful anymore.
But as for the bosses, I don't really have anything to complain. Also, the difficulty feels not too hard and not too easy on hard mode(at least for me) so I'm happy for now.
The ost is appreciable and I still think that larva's theme is one of the best first boss theme of the whole serie. The athmosphere is well worked, for each stages you feel like you're at a time of a day in a season.(you feel upbeat on the first stage, while being melancholic on the second)
I have been playing demo of touhou since Ten Desires, and as for now, it's my favorite demo.