I am a bit confused . You want to use the den for a closet? How many bedrooms do you need? I have clients in FLA they have huge closets so not sure how you thing storage and closets ae not needed. Every home needs storage no matter where it is .I need to know the sizes of what you call walk in clasets those do not ook like walkins to me . I think you use your space for how you live and not for some imaginary buyer down the road .I think oyu have a finite amount of space so use it for how you live . I think you have 2 choices either the kids use their bedrooms for gaming or you give up a bedroom for the kids for TV and gaming. I think reconfiguring the den , hall and closet space to make a bigger closet , a small office and the entry to it all from the foyer would work.

I would leave the floor plan as is.

You may want to consider using one of your closets for an office. I wouldn't want my work items in the same place my kids were snacking and playing video games. You could change the bar area into his closet and/or share the smaller closet and use the larger for a office. The larger closet having an outside wall you could put in a small window or high windows. By not changing the floor plan when/if you resale it would be easy to change the office back into a closet.

Patricia, she wants to combine the existing den with one of the master bedroom's smaller closets and give up the little wet-bar for closet space in exchange. I personally wouldn't want that much noise adjacent to my master bedroom. Keep the kids on the other side of the house. Make the bedroom next to the garage the den instead.

The OP's only question is, will eliminating the smaller closet be bad for resale. The answer is, who knows? Or more to the point, who cares? You haven't even built the house and you're already worrying about resale? If a larger den and less closet space is what you want, then eliminate the closet and build the house the way it works best for you.

Rapparchitecture tm- good point