Templars leadership works now by having top 3 full level templars selected as
"leaders". The benefits of this are currently (almost) merely cosmetic.

This also means that there's rarely much benefit of being a templar leader or
even taking full templar levels for this reason. Much of the best things in
the guild can be accomplished with lower than max guild levels also (auras +
templar shield).

What I suggest is the following:
The templar leaders would get the benefit of maintaining one of their auras as
"party wide". So extending the benefits (and hinderances) to everybody in the
party.

This would then accomplish 2 things: Make the leadership mean much more and
for that reason, especially make the templar rep gaining mean something.
As far as I can know, currently after you have hit reputation level that lets
you train righteousness to 100%, there's no benefit of having extra
reputation.

Limiting the auras to only the leaders keeps the power creep in check and
makes some healthy competition for rep gaining. Along with encouraging taking
full templar levels.