Which is a more powerful card crafting?

[ManofVita]

Investing in mainly one element, but with a high amount of points spent for said element

OR

Diversifying between three to four types of element points spent?

I find that diversifying the point spread equals more options for your divination.

[DestinyNova]

Diversifying. You get more keywords, and your keywords are more likely to give you notably different possible interpretations.

[nocforweb]

If you're just going for raw power there is one 'place' (Yu-enia's Studio: Earth/Water) and two 'things' (Opaline Squirrel: all elements, and a choice of 'things' from the spider-woman) you can get that all include multiple elements. Combine these with the three major arcana (The Coppersmith, Gaetheryan, The Penitant One), then pair them with the missing element (or double up on an element) and these will give you almost as many choices as the Wheel. Not as 'thematic' as really building out cards for fun, but after your first playthrough or two its a good fast-forward button to just max out choices to see the various endings.