For me it resembles DSJ3 too much with more details in the background and more detailed hill. I only hope that that 'repetitiveness' in gameplay that you need only a mouse to make a jump will stay the same. It's simple but I remember my first jumps on DSJ3 and they were terrible. I was too used to DSJ2. Simple, yet difficult to master. And that's the point! Now I can't jump on DSJ2.

Well, anyway I would be happy if hills had more round K-points. It doesn't matter if 5 hills are K-120, they can still have a different feeling when jumping, i.e. different thresholds (different heights, different grades), different HS values etc. There are 4 hills in real life with K-185 and each one is different! However, I don't say I don't enjoy flying over 300 meters. I would even like to see bigger hills like HS over 300 meters. I was very happy to see Croatia and later Iceland.
The other thing is wind. Normally, a ski jumper isn't allowed to make a jump when wind is for example 4 m/s in his back, on Slovenia it usually means I can at most get to the K-point. Also, now to get a very good hill record one has to have a good wind of at least 2,5 m/s (and the best wind on giants like Slovenia HS281 is ~2,5 m/s when taking off and ~4 m/s when landing, normally ski jumpers should be able to jump 300 meters even with 2,5 m/s, well with the wind of 0,0 m/s it's also possible to get a good score but it's still different than in real life). Just my thoughts to make it more real.
Keep up the good work! And you might take a look at
FIS rules for giving points for each meter for different hills, e.g. 2.2 pts / meter on hills with K-point ranging from 70 to 79 meters.