Drifting OT but since you brought it up Bob, I’m facing much the same situation now as you did. We have a main control room/linear edit suite that was great all thru the 80’s and passable into the 90’s, but now the big push is on for HD and I’m trying to feel my way thru an evolution of the room that makes the most practical sense economically and operationally. The problem is so much of the plant is old analog, getting it all to “play nice” with digital HD gear may be a case of “stepping over dollars to pick up dimes”, but to just tear everything out to the bare walls and replace from scratch is not within the budget.
For now, my idea is to “not put new wine in old wineskins”, and leave the analog parts of the shop in place to do the SD work they are still good at and that clients still call for, and to build up a “layer” of HD topology on top of and separate from the analog plant, as and when the pieces become affordable, starting with one camera and a deck, then a Panny 400 SD/HD switcher, then a CG system, and more cameras as the budget fits. The HD layer will be portable, so it can go out on remotes, but also be used in our studio eventually. The hard copy of the shows and spots we produce would be archived and distributed by FTP and BluRay.
Meanwhile I got a 3+ camera studio with Grass 200 that works well in SD, mastering to DVCPro25 and beta SP. With a one-inch RTR sitting gate guard duty for the occasional archival tape that needs resurrecting. We’ll see how the clients and the economy drive the addition of the HD layer.