I'm 40 weeks today. I bought a massive chest freezer and DH and I have completely filled it with about 3 months worth of meals. People have told me I went overboard but I feel this at least puts me in a good position to advise on the subject lol.
I was told that dried lasagna sheets were no good for freezing, but when I've done it in the past they have turned out fine - you're right about making it more saucy. Seems to do the trick. Remember that some of these "rules" you hear are more about getting absolute maximum quality. If you're happy with the fact that it wont be as perfect as fresh but will still be very nice then you can ignore a lot of these rules and save yourself a huge amount of time and money.
Also i would say go big! Go really big! If you're bothering to make a curry, for example, then make it bloody massive and get 6-8 dinners out of it. It's barely extra effort at all when you're making one anyway and it's cheaper to buy ingredients in bulk. Before you know it your freezer will be packed and you've only cooked a few meals.
Also have a think about the level of prep you are prepared to do after baby comes. Do you want something that you literally shove straight in the oven or microwave and is then ready to eat? Or are you happy to throw a few bits together or do some small amount of prep work on the day? We opted for a mix of both because it's our first baby so we weren't sure how we'd feel.
Also make sure you let stuff cool down before you freeze it, and box/wrap it up well. You really don't want freezer burn ruining all the lovely food you've prepared.
We cooked;
Several different kinds of curry
A meat and a veggie chilli
Several different kinds of Risotto
Bolognese
Pasta bakes
Lasagnas
Cauliflower and macaroni cheese bake
Several different kinds of Paella
Meat balls in sauce
Cottage pies
These are all complete meals that go straight into the oven or microwave and are then ready to plate up (a couple of them don't have much veg in them so would require a side salad but we're happy to buy bagged salad as and when we need it)
We also bought lots of filled pasta, frozen pizzas, chicken breasts, sausages, and I made a giant pan of mash and portioned some out. Yes, you can successfully freeze mash just as long as you make it nice and creamy - so use full fat milk and plenty of butter. American recipes are good for this. These are for if we're fed up of all the microwave food we've made and actually have the energy to quickly boil, fry or grill something. We also precooked pots of fragrant rice and have frozen this, so they can be microwaved along with the meals we have prepared.
We also stocked up on loads of bread so we'd always have toast and sandwiches to fall back on (along with cheese, tinned fish and jars of spread to go with it. All keeps beautifully when stored properly). I find it's defrosted by the time you've finished putting your sandwich filling on but if your house is cold you may have to let the sandwich sit for 5 mins before you eat it. You could always warm it in the toaster for 20 secs if you were worried about this.
I've also prepared breakfasty type wraps. They are hash brown, bacon, egg, peppers and tomatoes. I cooked up all the fillings, let them cool and then assembled it all into tortilla wraps. Clingfilm them up tightly, wrap them in foil and then you can freeze them. They will microwave best if you make sure they aren't too wet - I used a slotted spoon to add the tomato so it would drain the excess juice to avoid them getting soggy.
I will probably keep thinking of other stuff that I made that I forgot to mention, but hopefully this gives you a good starting point.
Oh yes, one more thing - label everything! If you've got a big stockpile of food and you've had 2 hours sleep in the last week then you won't remember what stuff is. Saves you pissing about rooting through the freezer and opening things to sniff them. Nobody wants pasta with chilli or curry with mashed potatoes 
(or maybe that wouldn't be so bad..?)