The phrase "are hesitant to include" is correct and usable in written English.
You can use it when describing someone's reluctance or uncertainty about including something in a discussion, document, or decision.
Example: "The committee members are hesitant to include the new proposal in the agenda due to its controversial nature."
Alternatives: "are reluctant to include" or "are unsure about including".
The boyfriend of one sibling and the girlfriend of the other will be present for the events, including the photographs, but I am hesitant to include boyfriends or girlfriends in formal family portraits.
Yet despite all this enthusiasm, Joe Calise, the president of Sight and Sound, an automation systems retailer in Seaford, said some builders were hesitant to include automation in spec homes, because it might not "add enough value to homes for builders to put it in for free".
Another reason publishers might be hesitant to include too much copy protection in games is because adding more code can slow down and affect game play.
Initially, Leith was hesitant to include it in the album because it was so raw.
While the team discussed a DeMarcus Cousins swap with the Sacramento Kings, the Lakers may be hesitant to include Russell should negotiations resume.
The Nagano Organizing Committee was hesitant to include the event because of the additional costs of staging the tournament, but an agreement was reached that limited the field to six teams, and ensured that no additional facilities would be built.
Page also suggested Cat Power's cover of the song "Sea of Love", which Reitman was hesitant to include as it had already been featured in the 1989 film Sea of Love; however, he decided that its inclusion would mark a "new take" on the film's cinematic references.
Some are hesitant to support any bill that does not include a broad path to citizenship for more than just the younger immigrants.
On "The Kelly File," host Megyn Kelly asked the panelists about Chicago Mayor Rahm Emanuel's recent claim that protests over police brutality are driving up violence in major cities, including his, because police are hesitant to intervene.
