Some strong entries here, and many of the tracks created enhance the old track and keeps the character of them too. My top 3 is as follws:
3rd is Kingshark with Zolder. Zolder is one of my favourite tracks to drive on video games, and whilst I like the tighter first corner and the extended section at the top, I feel you have killed one too many of the chicanes, which are great overtaking spots. No doubting this would be an incredibly quick circuit though!
2nd is James Brickles with Jerez. I like the new section you have added, it would create more overtaking and is nice and compact to create an Arena feel. However I feel the oversized first couple of corners wouldn’t work very well, and the chicane at 4.5km gets a bit close to a major road, so would need reprofiling.
and 1st is rob lomas, with Dijon-Prenois! I like the fact that the original profile of the circuit remains intact, and the new section compliments the old perfectly, whilst making it more viable for Formula 1 and creating a challenging track with a few overtaking spots. The downhill hairpin reminds of the Nurburgring’s Dunlop corner is particularly nice