The phrase "add a host of" is correct and usable in written English.
It can be used when you want to indicate the inclusion of many items or elements in a particular context.
Example: "The new software update will add a host of features that enhance user experience."
Alternatives: "include a variety of" or "introduce numerous".
To this, most of us add a host of factors -- starting with daily baths -- that can intensify the problem.
It can add a host of movie-style special effects to your phone's videos, although you do have to pay for some of them.
In the 1990s, thanks to Sir Martin, they went on a buying frenzy, using their high share prices to add a host of "below-the-line" services, such as public relations, brand consulting, Internet advertising and market research.
Add a host of integrated databases and then what do you have?
For example, you may add a host of features or integrations to an app -- and then revert back to the old version -- all without changing the location of the servers or the basic bricks and mortar of the company.
Nvidia has updated its Shield Android-based mobile game console to add a host of new features, one of which is very interesting in terms of how it might affect the growing Android-based home game console market.
The show has added a host of new characters to the lineup.
Yet, at the same time, she says, the federal and international regulators are adding a host of special Too Big to Fail capital requirements and rules.
With Nehalem, Intel's designers took the company's previous generation of chips and added a host of features, each of which adds complexity and raises the possibility of unpredictable interactions.
He said Microsoft's mistake with Vista was to try to serve consumers and business customers with a flashy release that added a host of multimedia functionality instead of taking into consideration practical concerns that would affect performance and compatibility.
It has since added a host of other TV sports rights, including a surprise £1bn deal to broadcast the Champions League, and is taking on BSkyB in the paid-for sports and broadband markets.
