I have a
suggestion:
Create another service on 179 that loops in
another direction. Similar to how the Bukit Panjang
LRT works, maybe this new service can go in the other
direction (via Nanyang Drive) as the original service (via
Lien Ying Chow Drive).
And you are right... There is definitely a perception issue and
few that make the problem sound larger than it is. If to clear the
perception, we want to create two loops, we can. That would in turn
reduce the frequency at each stop, and stain people will
complain.
It is not (only) about clearing perception. This idea is mainly
about diverting the
crowd and making bus rides on 179 more comfortable.
Regarding the reduced frequecy and longer waiting time, this is
perhaps inevitable. This is perhaps what NTU commuters have to
trade-off for less crowding and quicker boarding. Anyway, on
the positive side, I'm sure (most of) the students have access
to wi-fi, where they can check what time the bus arrives and leave
for the bus stop just on time. I don't think reduced frequency
would be a problem.
I think I got the idea after viewing http://youtu.be/aUuqq8RcaEg and
saw the Red and Blue campus loop shuttle bus services:
they run in opposite directions as each other. Somehow,
this makes me think of the Bukit Panjang LRT and...
*light bulb* 
If NTU can come up with this idea of having its two internal
shuttle bus services run in opposite directions(probably to split
up the crowd), why not also propose this idea on 179?
The earlier part of the loop of original 179 can enter/leave the
campus via Lien Ying Chow Drive. The later part of the loop of
original 179 can enter/leave the campus via Nanyang Drive. This
would split the crowd into two, while
enhance the bus connectivity within the
campus.