Once again, thanks everyone for your thoughts. The idea of a skylight is definitely on the cards - the glass doors are something that we just like on all the other doors, with the toilet just being the question. Also, a skylight might be a bit beyond our DIY (sky-tube maybe less so?) and trade work down here takes time (I'm not just in Snowy Mountains rural, but then down a country road 25km, plus another 2km of uphill dirt driveway, and the trades don't always show willing) - things we can't do ourselves take time and frustration. What Maguire Architects says about heat loss is important to us though (thus the double-glazing, storage heaters, etc.), so I've particularly taken that on-board. As for IKEA (jajlynn, Belinda)... jajlynn, that kitchen looks fantastic. I love those overhead lights - they really suit the style. Brisbane IKEA did delivery to Sunshine Coast, but the cost was pretty exorbitant, and they wanted to charge that each time more of the ordered stock came in. It got so frustrating having an incomplete kitchen, waiting for stock, we eventually brow-beat them into sending the stuff from a Sydney store (something they were very unwilling to do, even transfers between stores). They sent whole cupboards by Australia Post, slathered in standard stamps - it was weird. But it got done, and it got put together. Before and afters below Belinda, I'll be honest with you: as much as the IKEA kitchen is better than the Mitre10 kitchen, instruction-wise, you're gonna swear. You're gonna have to paint over the blue when you're done. ;) Just remember, when you're swearing, and probably at each other (assuming there's an other here - otherwise, at yourself and everything else), but it's just a kitchen - you'll get it done, it'll look great, you'll be justly proud and you'll want to do your next one (maybe not straight away though ;) ). That's why we're doing stuff here straight away in the new house - it gave us confidence to do it or learn trying. Now if you'll all excuse me I've got to get back to swearing at pantry wall cabinets, at my partner, at Mitre10, at the government, at that thing over there whatever it is, and at cursed fate that placed these suddenly-discovered slightly-wonky walls between me and happiness. ;)

Most door companies stock what you are looking for.

Hi there, I think that the skylight would definitely be the way to go, if your budget runs to it. It will really lift the whole stairwell and make it much lighter and brighter. Full height frosted doors may be OK on the laundry, but I wouldn't recommend it for the bathroom as when lights are on in the room, you may be able to see more than you bargained for, from the corridor. The occupants of the house may feel comfortable with it, but any guests or visitors may not. A frosted panel at the top of the door would be as far as I'd go. Bear in mind too, that glass lets more sound through than timber, and in a situation like yours, I'd recommend a solid core door, for that reason. I hope this helps!

I think you should add a skylight, even if you pay a fortune to retrofit glass in the door it won’t make much difference because you still need to maintain enough timber in the door for security. I had the same problem in my 50Ish house . I installed one skylight close to the door and one further down the corridor, all done in few hours and looks great.