1.5 - 1.7 rocker ratio

Just wondering, since you can take a "LA" cam and install it in a Magnum engine and gain lift with the 1.6 ratio, which is probably good... What about making use of the 1.7 rocker available for a Magnum engine on the 1.5 rocker ratio "LA" cam?

Lets also say we have VERY well ported Edelbrock Magnum heads on the engine.

Here is a Howards Hyd. roller cam to start with.
http://www.summitracing.com/parts/hrs-713175-10/overview/

Any thoughts on this? Pro's - Con's....