Where they anticipating a decline when they introduced the LDC design or do they have different sizes of this new design?
As I recall from the video, the new KH design comes in 3 "sizes". You probably saw either the small or medium one.
most KH projects are on hold because of the needed resources for Warwick.
This makes 0 sense. There are 10's of thousands of US JWs who volunteered for RBC and and are still on the list for LDC. There might be a few hundred who are on the Warwick site full time, and the rest are there for short bursts of a few weeks or a few months. Plus, a lot of the work is now being done by "worldly" contractors.
There are many 10's of thousands with RBC experience who are not at Warwick, and are sitting around twiddling their thumbs.
Maybe by "resources" they mean "money"? That also makes little sense - there are $10s or $100's of millions being contributed by the congregations into the special KH construction fund. It would be a serious breach to use that dedicated money for building Warwick - even brain-dead loyal JWs would get upset over that.