This was a guided tour of the future main station in Stuttgart called Stuttgart21.
More pictures: https://imgur.com/a/8QnDQrO
(Disclaimer: The descriptions could be wrong for the east/west orientation :P)
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Honestly it seems like a sensible change. If I'm not mistaken Frankfurt Hbf is also a head station and you lose a ton of time because of it.
If I remember our guide correct, the current max speed into the main station is 50kp/h max vs S21 being at 80kph.
Because it's planned as the first fully digital station (meaning only digital equipped trains can pass due to signaling) it should be able to not require full stops or similar.
At least what the guide told us seemed all logical and dainty but it still is taking a ton of time and money.