*please link to a bigger pictures.
The completely white region should still have scanlines clearly visible, a more realistic look would be 2 rows white and 1 row black (240p in 720p).
Real scanlines are quite uniform and visible at maximum luminance (white), they gradually get thinner on darker regions.
On a properly calibrated CRT (100 Nit peak luminance) the white color is not overbloomed or ‘connected’ as in your example images.
Here are some photos from my 29″ Sony Trinitron:
Mainly this one:
A great option would be to have the white region and black region scanline strength adjusted independently.
Now lets see how they look in 720 after you fix the white region scanlines. 🙂