While waiting NAIA Terminal 3 openning (LOL!), they start improving the Domestic old terminal to increase its capacity:

Domestic airport starts expansion, improvement (Manila times - Feb 19, 2008)

The Manila International Airport Authority (MIAA) and Cebu Pacific have jointly started the expansion of the Manila Domestic Airport on February 15, which will be completed by April 15, 2008.
The expansion of the domestic airport facilities will increase seating capacity by 66 percent and ease passenger congestion, especially during the peak season...
Read more here:
http://www.manilatimes.net/national/...80219met3.html