If they take those tire-barrels they put at the end of walls and space them out at regular intervals in the middle of the walls, it would stop wall-riding in its tracks.
Another thing I would suggest for PGG when making FH5/ second FH4 expansion, Place the walls farther away from the road. Keep the flags on the edge of the road surface but push the walls out a bit so it is possible for wall riders to miss the checkpoints.
EDIT: to compile some of my post from the Features wishlist thread on the official forums...
Multi Purpose Stunt Zones.
I see many Drifters complaining about how a Speed Zone should have been a Drift Zone and Racers complaining about how a Drift Zone should have been a Speed Zone. So why not combine the two into a single Stunt Zone that tracks both Average Speed and Drift Score so they can be both a Speed Zone and a Drift Zone.
Also an "
Always On" option for Streamer mode so we don't have to manually turn it on every time we restart the game.
Let us put ANY tire compound on ANY car. What if I want to be silly and put lower grip tires on a car? what if I want Vintage racing tires on a modern car? What if I want to lower an F150 Raptor and put racing tires on it? What if I want those chunky off-road tires on a sports car? Currently I can't do those and would love to.
Ideally for FH5 I would like to see the total number of tire compounds increase 5-10 fold with a rework of the upgrade menu similar to how it works with rims. Split the tire compounds into multiple categories; Street, Sport, Race, Drag, Mixed-surface, Vintage. With multiple variations in each category, maybe with tire branding, subtle differences to performance (Similar to the tire compound system from Forza motorsport 2), different tread patterns, White walls, etc.
For the Mix-Surface category I want 4 options. Rally-Cross, Rally, All-terrain, and Off-road. Each with slight differences to grip levels on various surfaces. Rally-Cross would be best on tarmac, Not as gripy as Racing tires on the tarmac but better then racing tires on dirt. Rally Tires would be best on Dirt roads. Off-Road tires would be best off the road, Through grassy fields, mud, sand. And the All-terrain would be a good all-rounder, but not best at any, and use the tread pattern from the stock tires on the F-150 Raptor. Also Snow Variants of each for the winter season.
Vintage Tire Category needs to have a White Walled variant, and the Vintage NASCAR style tires that are on the Monte Carlo. Would also like some options with very old school tread patterns that aren't normally used anymore IRL.