That is a vivid update for the exterior & I would welcome any of it in some capacity.OK, OK, let me quantify my posting of the HM movie draft design: I didn't have anything else to post that would get the point across. By no means was I calling for the HM's facade to be totally redesigned after the film.
Let me try to paint a potential portrait of external changes in order to "flesh out" this question.
Image the hue of the whitewashed facade slightly dimmer, an off-white, almost faded or stained white. The green adorning the wrought iron and storm studders dimmer as well, almost a murky moss green.
Imagine green, well-laced ivy coiling around the mansion's pillars and posts, the leafy vines looking to almost suffocate the mansion. I see rose bushes seemingly unattended, allowed to grow wild and thorny, yet sprouting attractive vibrant red pedals.
I foresee the removal of the pet cemetary, replaced by the entrance of a once-sealed shut mausoleum, the cement seal curiously broken, the door slightly ajar. The names of five men are listed as occupants, all bereaved by a single woman, one Constance Gracey.
The family plot returns to the brushy hillside. The white hearse finally leaves. In its corner, above the small brick alcove in the mansion's front, a withered, weathered, and vine-entombed wrought iron gazebo stands. From it, soft, disarming music plays inside, music from a solitary music box playing a lonely, woeful tune.
As per Bellhop's suggestion, the entrance garden will receive a tasteful selection of period-correct, stately statues and busts, only these mute occupants of the mansion will too be coiled and wrapped in overgrowth (imagine a woman's bust buried deep behind cypress trees, so encompassed with spidery vines that her hair looks disturbingly like the gargon portrait inside).
This is what I am proposing. It's a complete departure from Walt's "let's take care of the outside" comment, but also retains a bit of reverance to his maxim, as the mansion will look aged, but not dilapidated.