Previous owners were afraid of gas so removed the heater. We have never missed it. A crate goes in the home filled with shoes and bottles. The wardrobe is useless as a hanging cupboard. We have those canvas hanging cubbyholes in ours and I store the remoska and hob on the bottom. A small oil-filled radiator does the job when it's cold. I don't want a microwave but a bigger fridge would be great.
I don't understand the bit about the window. Our kitchen has a window and the pop top has a zip opening so plenty of ventilation. I cook outside, though.

for us it would be no sink in the loo but add some kind of usable shower

When i said "window in the roof" I meant a skylight - the word escaped me at the time of writing! I would rather have light and fresh air from above my head - and ventilation that I could stop the light getting through. i have always struggled to sleep when it's light...

Our first Triton had hot water and a shower tap. We used the hot water, but never the shower - just not enough room in the cubicle... Agree about the sink though. I like having one, but not in the Eriba arrangement - the cupboard underneath takes up too much knee room. Older Tritons were worse than our current 2005 one, though. And, I think, they have improved on that with the post 2010 models? haven't had the chance to try one for size...

The Trolls were originally the same width as Tritons, but there were a couple of layouts that were 4ins wider late in the 2000's and the German production from 2010 were,all that extra 4ins wide. Amidships most of that extra width went into the washroom, making it a touch more usable but the toilet and furniture arrangement was poor until 2013, when the bench loo came back and the current furniture design came in.
I've always wondered why Hymer have never made a Troll with a 540 front dinette and a 530 rear. That would provide extra
space to extend the washroom and the kitchen.

I like the wider shower idea Andy, I wouldn’t need to practice playing Twister before a holiday!

I plan on a couple of changes to our 310 to make it more suitable for us. First: Fixed Bed ! Appreciate any info from anyone who have converted theirs.
Gas: like many here, never used it. Never used the heater even once, don't use the gas hob. Reluctant to remove either but cook outside and also a small oil filled rad that we have used once?twice? So take out the heater and gas bottle and fittings.. perhaps..Somewhere to cool large drink bottles would be nice.
I was a motorcyclist for most of my life and remember a comment on a BMW Motorcycle Forum: I would love a BMW made by Honda, which due to QC + corrosion issues was bang on.
ChrisB

I would love that...

For me, the loo and wash hand basin are precious. I suppose you could brush your teeth in the sink.......; just not the same LOL I have a shower tent and a solar shower that I use if the site ones are a bit dodgy. The only thing I dislike about our Betty is having to do gymnastics in the night to go to the loo as I sleep under the window.

Same for me. My wife is the more frequent user and I can just about make it through the night without needing to go. But that getting up and silently vaulting over her isn't the easiest thing... Our first Triton - a 420 - meant we could sleep longways, but then we didn't have the front dinette to sit st once you had got up... maybe a Troll 530 would be the best answer? Or, even better, the wider Troll 550s? But then, it's wider to tow... No perfect solution.