Restore the facade. Don't render as you'll loose the fabulous brickwork. Just re-point it. Do maintenance on the roof as needed. I'd pressure clean then see what it comes up like. If it's still a bit ordinary then paint it. I would do a bit of investigating on other original colour schemes before choosing charcoal, even though I admit the charcoal does look really good! By the way we render as we don't want to pay brickies to really use their craft so we buy cheap bricks and render. Render does look fine when used as a feature rather than a whole facade. Don't compete with neighbours make your house more desirable by keeping its character. I would however consider spending some good money on the landscaping. There are some superb gardens on these wonderful homes around the inner suburbs of Melbourne for example and would work great with yours.

I just googled & found this site, which quotes cost of R2.5 75mm. there are other suppliers as well. What was quoted to you for cost of roof installation, and was it itemised so you can see exactly what thickness the foil-backed insulation builder will use? I'm guessing the thinner (lower R factor). So, the new quote should reflect a credit for the cost of previous insulation, since it won't be used, then cost of thicker insulation added. Does that make sense? If you are unsure, best to speak with the builder. https://www.pricewiseinsulation.com.au/product/heavy-duty-fletcher-permastop/

Yes go monument!and if you go for some lime acacias out the front (tall weeping or the low bush)it would brighten up you whole look.Also adding strappy green plants that bulk up would give it a bit more of a clean look. If you don't want to go monument on roof go a light grey and tie in with a couple of tall light grey planters on either side of your door. Pleas please please!find someone with a jigsaw and cut the tops off your pickets to give a cleaner look before you paint them. I'm stating the obvious but those security screens are pretty overwhelming,can you just have them on windows that can be opened,it might not look so busy out the front.

Personally I would go a lighter grey than monument and leave the posts and garage a light colour to contrast given the grey driveway. Wallaby or basalt maybe.