This was brought up for discussion awhile back on CSW. I, for one, would like to see Infantry Attacks included in the PG-HQ site. The games are so related that IA is really an extension of PG. I do like games that are related and cover diffent parts of history.
For a more specific answer, adding IA into PG-HQ is currently waiting in line behind at least all of the following projects:
finishing the Library upgrade
adding photo galleries
adding advanced search
Complicating the situation is the fact that I do not own a copy of IA, so am working somewhat "blind" when it comes to making site adjustments to support it.
It'll go in eventually. It's just not a priority.
...came for the cardboard, stayed for the camaraderie...