Anyhow, it's consistent with belonging to a grammatical sentence. But what does it mean? There are issues of semantics and usage that are as important as grammar.
Forgetting about grammar, it's not clear what you mean by "render alternative designs for improvement." Improvement of what?
Doesn't designing forklift frames necessarily involve rendering alternative designs? At every step of the design, you'd be considering alternatives, otherwise you wouldn't be designing. And it probably goes without saying that you're not doing it to make the design worse.