Celia, I think with a Victorian house you're lucky if you can make a list that doesn't involve taking walls down, or extensive damp or woodworm treatment.
It's just how they are unless they have been really well cared for, OR someone has had to restore it all before you bought it.
We just bought a Victorian house and it's a bit like you describe - every way I turn, every small bit ofdecorating I do or wallpaper I remove reveals new problems to sort out.
However there is an end to it. We haven't moved in yet thankfully. We won't have rooms we don't use daily. So it all has to be pretty much sound and finished before we do.
I am a bit less in love with it than I was before I realised quite how chopped about and hacked up it was. Poor old house is a phrase that passes my lips at least once a day.
The house next door is a mirror image and sold just now too, however they were able to move straight in - it's beautiful. I spoke to the previous owners though and they told me how much work they did when they moved in. So someone has to do this stuff, and once it's done, you will see the loveliness.
Our list involves rewire, replumb, new boiler and rads, taking up flooring, fixing broken floorboards, taking off badly done DIY stuff (like 80s fake dado rails) and replastering some bits where often no one has bothered to even make a nice hole, they have just bashed it with a hammer by the look of it. All the windows want fixing, but at least they are original, and the spindles on the stairs are all mismatched and put in badly. Sigh.
Oh yes and the chimney is falling off, and there's a small amount (I hope) of woodworm and also some damp.
I think it is all sortable. Then I have to decorate. 
It's going Ok. We are making progress. I found I am quite good at plastering!
GOOD LUCK and whatever you do, don't start picking at the plaster as you will end up with bare lath, if it is anything like as crumbly as ours.