There's a lot of timber going on here with the floors and the door, I would avoid any more features in this room and add a narrow console as the previous owner did. Just think, you didn't notice the crevice when you viewed the property. A console is easy and inexpensive, it's also functional if you use it for keys etc. Sitting a large plant (or cut flowers if you can manage the upkeep) on the console will add some vibrant colour and the mirror will reflect it adding depth. A few other accessories will help to dress it up. Consider baskets under the console or something similar to hide the crevice and cover the vast mirror. Whatever you decide to do, I'd love to see an after photo!

can you inlay it into a metal or timber frame ? then that way it doesn't look odd ? no need to glue? the legs then can be screwed/welded into your frame?

We like to group irregular shaped items in 3's. Maybe a candle and some vintage books stacked with a vase of colourful flowers? I would also place a simple mirror on the wall.

My goodness, what you have looks fabulous, but if you want a change the ginger jars are lovely, but I think your items at the moment are stunning.