I was at the Holideck Lounge a few weeks ago. Its definitely not impressive by any means, but it was almost right across from the gate that my CO LHR --> IAH flight was from (is this unusual?).
I'm glad theres a nice ST lounge in there sans the fact that we'll lose access to it come October.
In general, though, Terminals 1-4 could use a demolition and complete rebuild. I find it appalling that the City has such a poor excuse for an airport.