"critical suggestions" is correct and can be used in written English.
It refers to suggestions or feedback that is crucial or essential for improvement or success. Example: The CEO listened carefully to the critical suggestions from her advisors and implemented them in her company's new strategy.
We thank Dr. Barbara Platzer for helpful critical suggestions and Michael Pardo for critically reading the manuscript.
Mr. Gehry, our finest living architect, has already shown himself willing to listen to critical suggestions.
She is open to critical suggestions — John Gotti asked her to eliminate his double chin in her sketches, a request she granted — but she has never faced the combined wrath of Twitter and Photoshop, which Brady fans used to create mashups featuring her drawing.
Critical suggestions of geodetic payloads for the follow-on mission of F3/C are presented based on the current result.
TS offered critical suggestions on the algorithms' design, provided significant revising for important intellectual content and gave final approval of the current version to be submitted.
Finally, we make critical suggestions for the design and function of biogeographic databases to make contributed data more useful for conservation efforts.
This paper finishes with some critical suggestions and future perspectives, underscoring the roles of composite material researchers and engineers for the further in-depth studies and up-scale commercialization of plant fibre composite.
The marketplaces guru is also a long-time backer of Zillow cofounder Rich Barton in another startup, job review site Glassdoor, where Gurley made the critical suggestion not to spend millions on marketing and saved the company, Barton says.
But most career advisors include one more critical suggestion -- find a mentor.
TT participated in the design of the study, and gave a critical suggestion to the project.
Therefore, it was no wonder that in the 1970s the rest of the world was very critical of suggestions that Europe was going to undertake such a venture.
