There are a lot of benefits in creating Asymmetric weighted multi-sig wallets. These are wallets where not all keys are equal.

Currently, in a 3-of-5 wallet, all 5 keys are treated as equals. While this may be fine for a majority of uses, it might not be best for all.

Imagine a system where a corporation has a multi-sig wallet with keys held throughout the financial management structure, the CFO's key should not be weighted the same as a manager's key.

Or a traditional multi-sig wallet where you give contingency key(s) to family. You may not want their key to be worth as much as one of your own.

While these systems are *technically* possible right now by just giving higher-weighted entities more keys (e.g. the CFO gets two keys, everyone else gets one), there is no real system for this in Bitcoin.

This essentially moves multi-sig m-of-n keys to be m-of-n 'units', where a threshold of signature units must be met, and each key is worth a set number of units.