Doing up the house. Thoughts?

We were discussing recently "making over" mid-20th Century houses, and I'm still very much mulling over what to do with mine to give it that all important kerb-appeal and obtain the highest possible sale price when we come to flog it in a few years' time.  So I thought I'd post up a picture and seek the thoughts of this style and fashion conscious panel.  What do we reckon?  AS you can see int eh phot next door have gone with the inevitable render and dark window frames.  But I'm thinking maybe if we got some more modern white windows with vertical casements rather than the dated horizontal ones, got the brickwork cleaned up and re-pointed and replace the white uPVC cladding with some thing to match the front door, which we have already modernised, and also fit matching soffits, drainage and a matching roll-up garage door - I reckon that would bring the place into the 21st Century without too much expenditure.  

What do you reckon? Anyone think a full render/clad option might be a better way to go? A bigger project I'm considering is building another bedroom above the garage (the stagger back is deeper than it looks, there's room for a double bedroom).  Also, the house repeats the staggered shape at the back on the other side, and filling in that hole would give me the chance to add a new kitchen/diner on the ground floor and convert the existing dining room to a WFH study and the existing kitchen in to a great utility room which we lack right now - and that would give us 2 studies, which would appeal to families where both parents can WFH, and a new bathroom on the first floor.  Whole project would uplift us from 4 beds 2 baths to 5 beds (all doubles) 3 baths. 

Yes, that's the Civic on the drive under the cover (the magnolia next to it and the lime trees around the house are an utter pain in the aris).  And that's my WFH laptop in the window above the garage on a laptop stand.