The LRP utilize for what I understand the element of earth and it’s from there the magician trace the pentagram. Does it mean that LIRP invokes the positive traits of the element of earth into the magician and LBRP banish the negative traits of the element of earth in the magician?

I believe the idea is beginning with simplified versions of the 2 rituals (choosing Earth as “basic element”) but indeed these effects may take place; maybe they’re a bit intended as well.

What you essentially want to do with the invoking pentagrams in the longterm is to built the four kabbalistic worlds as far as I have understood.