Dual Identity (Ex) - Room to grow; Suggestions list

[Æthernaut]

Playtest document wrote:

For the purposes of meeting a qualification for a feat, class, or other ability, he is only eligible if both of his alignments meet the requirements.

This all-encompassing solution works for simplicity sake, but there are opportunities to turn this class restriction into appealing features. Here's four suggestion:

• Imagine that a character has a feat that becomes dormant due to a restriction. It would be interesting if an alternate, non-combat feat could be used exclusively while in the "Social" persona, one that goes dormant when the "vigilante" persona is re-activated.
  
• An improved familiar dropping back to its previous (non-improved) state would go a long way in helping the vigilante mask her identity.
  
• If a zealot could successfully brandish the holy symbol of a deity that shared a domain (one that was still within the reach of the alignment switch), then it could help her maintain a facade. (It also embodies the dilemmas of a polytheistic lifestyle.)
  
• An exceptional ability similar to modify memory, but usable only on one's self could be useful in deterring the truth from being plucked or cajoled out of her.

Naturally, each of these branches could be exceptions to the dual-personality class feature and be restricted by requiring new feats or by locking in a talent, or be part of an archetype, whichever seems the most mechanically balanced for each case.
I'd be interested in hearing any other suggestions.