The phrase "a layer of complication" is correct and usable in written English.
It can be used to describe an additional level of difficulty or intricacy in a situation or problem.
Example: "The new regulations added a layer of complication to the already complex project."
Alternatives: "an added complexity" or "a degree of difficulty".
In fact, the models tended to add a layer of complication to what he fundamentally believed was the relationship between photographer and sitter.
Formula One's relentlessly commercial nature adds a layer of complication when you try to turn it into a game, which may explain why the official licence has pinged around the publishers – EA and Sony have owned it in the past.
Food prejudice and what might be called compulsive counterprejudice (feeling compelled to demonstrate a lack of prejudice by favoring a previously forbidden item) add a layer of complication that makes the entire experiment suspect.
This variety adds a layer of complication because the optimum labelling conditions and labelling efficiency of a given precursor can vary depending on the combination applied (Seemann et al. 2015a).
That adds a layer of complication on top of the rules for forming plural possessives.
Lam explained that the increased power warranted by the Conservatives' controversial sex work reform bill adds a layer of complication.
Several brokers said the continuing involvement of Mr. Macklowe, who is considered highly creative but also litigious and a tough negotiator, adds a layer of complications.
The latest scheme is personalisation: that may be an ingenious way of letting pupils concentrate on what they are good at or it may simply add a new layer of complication to a system that is already unworkably barnacled.The new academies may also prove to be gimmicks.
Now oil prices are lower, but remain volatile.Controversy over the environmental impact of fossil-fuel use has added an extra layer of complication.
Dealing with mortality, in particular, can add an extra layer of complication.
