I have been informed that Loop chess as played here, is similar to a 4-player variant called bughouse chess. Upon doing a Google search on that latter topic, I found a site that discussed some interesting ideas that might apply to Loop. I copy them here & hope they will be of some relevance to we Loop players...

Piece Values:

Most serious chess players are familiar with the Piece Value Table: Q=9, R=5, B and N=3, P=1. In bughouse however, the values are completely different. While there is no general consensus on bughouse values, here is an approximation.

Q=10, N=7, R=4, B=2, P=1

The knight and queen rule the bughouse chessboard. The queen often can be placed into a position with mate. The knight is useful as well because it can check from a distance and not be blocked. Many bughouse mating attacks begin with a sacrifice on KB7 followed by a knight check. For example, after 1.e4 e5 2.d4 exd4 3.Nf3 Nc6 4.Bc4 Bc5 5.Bxf7+ Kxf7 6.Ng5+ all white needs is a queen for f7 and black will get mated. The bishops value is seriously diminished, as it often performs no better than a pawn, and sometimes not even as well. The pawns promotion abilities may in some positions be worth significantly more than a bishop.