You could fit it out with narrow shelving unit that is flush with the doors, ie. rest sits inside wardrobe. So has that build-in look. Light the shelving for display pieces, or not. Use to house a sound system. Some shelving units come with a glass door which would be good for display items. Or fit shelving with a push hinge door and use as additional hidden storage. Or as a shoe cabinet. Or do a series of small floating shelves that come out into the room if that's practical. You can get some with pull out draws. Otherwise, mount a LED light panel or backlit wall panel art?

I really like these [bed side tables[(https://www.houzz.com.au/photos/north-seminary-contemporary-chicago-phvw-vp~13970763) which are bespoke although too large for my room. Anything similar, but not as wide, in Australia..ideally Melbourne?

I would build a new floor to ceiling robe where the existing robe is, extending it across to the door frame and building storage across the top of the doorway to the same depth 600 as the robe, this will give great hanging space and privacy from the living room. I would then add draws approx 450 deep facing the bed, this will give more floor space, I would have a full height wall on the entrance side of the drawers to give privacy to this space which could have a TV or shelves or artwork above these drawers. By using drawers and not full height robes it will make the bedroom feel bigger while adding extra storage. cheers

to remove the whole wall and consider custom storage there are expensive demolition, structural support and rebuilding issues (think $20,000?) that won't add extra space, just rearrange what's already there..whatever the long term decision the unsuitable wardrobes will need to be removed so you could try my suggestion, live with that and then consider more drastic changes that would be equally expensive to restore..an interior or building designer or a draughtsperson can draw up different ideas and a builder or carpenter can do the work but you need to be clear about your budget as a simple job can spiral out of control before you begin redecorating..the key word i considered is "reconversion' and i think you'll achieve a much more cost effective solution by not removing any structural walls ..the computer program i use is called 3D Home Architect Version 4 and is the best simple program i've ever used but it's many years old and not readily available any more but there have been several recent HOUZZ enquiries with answers about other CAD programs that might suggest alternatives..but, for such a simple proposal, nothing better than precise measurements of the existing spaces, graph paper, ruler and pencil and a clear understanding of what's already there (eg are the wardrobes added to the wall or part of the wall, do they reach the ceiling and are they raised off the floor and what style of doors do they have??) some photos could help inspire more suggestions from other HOUZZERS