I think Scalextric may have made too many changes at once. It also seems a case of two steps forward and one step back.
The no brainer positive changes -
1) Changing the body and chassis for better body float.
2) Compatibility with Slot It tires.
3) Lighter weight body for better handling.
4) One body screw in the back.
On the fence with these changes -
1) The deeper guide flag which normally would be a good thing, but in this case, compatibilty with Scalextric Classic track and concerns if the bottom of the guide flag will hit the wires on the Scalextric Arc and Digital power base tracks. I understand that the guide flag can be trimmed but would much prefer two guide flag options included with each car.
2) The change to an inline motor configuration on all new cars. I think the motor configuration should be dependent on what is suitable for a specific class of car. The upcoming Javelin would be better served as a sidewinder to better match the previous classic Scalextric T/A cars.
In my opinion a step backward -
1) Looking at the example in the article, I do feel you lose a lot of detail going to a half tray interior. I would have preferred a 2/3 tray interior which would be a good compromise for both racers and collectors.
Best regards,
Brian