Aside from the game balance issues it introduces, it's a slippery slope.
Throughout the DDF and even up until now, we've had FD resolutely sticking to their guns on what ED was supposed to be - backed by DBOBE and Sandro in statements/videos etc waxing lyrical about the supposed tennets of the universe ED was set in and why some things couldn't exist.
You can go back and read the DDF archive post where Sandro and others flat out state that they wanted people to identify with their ships, and didn't envisage players owning many ships, they should be expensive, and difficult to obtain to build a sense of ownership - hence, transfer wasn't needed, hell even multiple ship ownership was dismissed for the longest time.
But in a single gamescom video - *poof* all that has gone - Sandro now wants people to own lots of ships and move them around the galaxy instantly. It's the U-turn I find most disaapointing. What's next, AI? And there's not supposed to be artificial gravity in ED - but if it's open season on design decisions - why not just have it?
If they can U-Turn on ship teleporting which has been so staunchly dismissed until now, where's our market data for stations other than the one we're at? I can teleport a ship across the galaxy, I can communicate with others over infinite distances, but I can't see what price commodities are at in different stations? Not even in the same system?
It would seem to me that if they implement insta-transfer as described, they can't hide behind any plausible "because that's how it is in the universe" decision any more, as they've just contradicted their own design for "gameplay reasons".
imho, being able to see market data from other stations before you set out would add more gamplay than insta-ship warp. But at least now all you need is an AspX, and then only summon your Condie/Cutter when you find something worth buying