I would not put anything opposite the collage you have now because your hallway is too narrow. Some people like to move as far away as possible from such displays to take the pictures in as a group. That wouldn't be possible in your space if you had stuff on the opposite wall--- they might back up to see one wall and knock things off the other one. In general, if you have a hallway width less than four feet wide you don't want to line both walls with anything. If you have a long hallway or one punctuated by doors, you can put a grouping on one side, then hang things on the other side of the hall, not opposite but further down, iykwim. I would use a nice painting or print at the end of the hall, unless there is something you want to reflect from the other end.

What about adding some wainscoting and runners to help fill the space like this area. I like how they placed the vase and books on the console table. The photos don't have to be of your family, they could just be scenes that you like. A set of photos (think places you've traveled, places you like -all in black and white addes a touch or formality since you'll see it from your living room. [traditional hall design[(https://www.houzz.com/photos/traditional-hallway-ideas-phbr1-bp~t_743~s_2107) by san francisco interior designer Amoroso Design Alternatively, you could just have a beautiful rug there and the console table and grand lights like this space: [traditional hall design[(https://www.houzz.com/photos/traditional-hallway-ideas-phbr1-bp~t_743~s_2107) by los angeles interior designer Elizabeth Dinkel I started a search for you so you can gather some inspiration from here as well: Here is a link that might be useful: [Wide hallway with console table images[(https://www.houzz.com/products/wide-hallway-console-table-prbr0lbl-pl~l_88732)

I tend to go for bigger. And I really really like the bigger one you picked. :)

Photos of Hubby and I, children and grandchildren are all in similar black frames. I have 3 photos inherited from my grandmother, my mom and aunts that are in blond frames from the 1950s and 1960s. I'm hesitant to lose the vintage quality. They were scattered but I could hang them as a grouping. I have a couple other old photos I'd like to add so our grandchildren can see them without having to haul out and wade through 3 different albums.