The phrase "a much more restrictive" is correct and usable in written English.
It can be used when comparing the level of restriction between two or more things, indicating that one is significantly more limiting than the other.
Example: "The new policy is a much more restrictive measure than the previous guidelines."
Alternatives: "far more limiting" or "significantly stricter".
The breadth of the expansion stunned oil industry representatives, who were expecting a much more restrictive policy accompanied by tough new safety and environmental rules.
El Espectador, for years a leader in challenging government officials, has turned more cautious under its new management, operating in a much more restrictive political climate.
If, say, a licensed clinician provides an evaluation of the student that strongly urges a much more restrictive setting, the team creating an Individualized Education Program for the student must take such a recommendation very seriously.
"Some people around here get cold feet when threatened by the administration," said Senator Patrick J. Leahy, the Vermont Democrat who leads the Judiciary Committee and who had unsuccessfully pushed a much more restrictive set of surveillance measures.
Instagram is now pushing developers on a much more restrictive platform that only lets approved partners post at users' behest, and that can only pull mentions of and analytics about business accounts.
Plus the heat the chip generates has to be dissipated, which is easier in a desktop PC. "Basically in a notebook, you're working with a much more restrictive environment than in a desktop machine," says Dean McCarron, analyst with Mercury Research, a Scottsdale, Ariz-based market research firm.
The claims-made basis for liability insurance is considered much more restrictive than a per-occurrence policy.
In addition, a further two scenarios were developed, one based on the current legislation in place and the other representing a potential future legislation which is much more restrictive.
It is possible for small satellites to hitch a ride along with big payloads, but that can be difficult to arrange and is much more restrictive than having a dedicated low-cost launch vehicle like White Knight Two.
But he said the set of regulations that came back to him from Cuccinelli's office were "much more restrictive" and included "a variety of different requirements that were unneeded for clinics providing first-trimester abortions," including a set of building requirements that were intended to apply to hospitals and surgical centers built in 2010.
