Both have different significance in design depending upon the location, surroundings and the way house is formalized. It is difficult to choose one. Since had to vote for one,........opted for one!!☺

Hello Ravi, We should be looking at this at the time of elevation planning. For the pyramid base of 12/2 ft it needs to 8 ft high which MAY look huge depending upon the design of the house. You shall request your designer to provide you an elevation to take a call on this. Thanks, Amit CORNERSTONE DESIGNS Bangalore.

Although it does not attract much attention, so can be left as it is. But if client wants to get it done...Have you consider vines instead like English ivy kind of plants? Although it might be difficult to find any long enough to cover the area. You could drip irrigation for them. Another option is to get a wall build according to the curves but again that would mean changing the exterior. I would not recommend fiber options. They don't look good. You can work around with metal pipes to create a new look too

Yes. You can fix heavy duty fastners in slab. Just check out the fixing detail on youtube.