All of the following is a guess.... but if one looks at the plans for the "Major Project"? I think you'll come to the same conclusion. Rather than repeat a previous post....
1) What is happening NOW in the South Wing will be finished VERY shortly - if you will show up Sept/after? It's not a consideration.
2) IF WDW gets it's permits... the first action we will see will involve the existing PL to the NORTH (World Drive to Wilderness Drive), and the construction of a proposed PL to the SOUTH (Wilderness Drive toward the Campgrounds). This MUST be done to provide equipment staging for the roads that don't exist, or are insufficient, to get heavy equipment into the N and S beach areas.
3) Now check 2). It's important. We know the VWL pool area is going to get revamped. Quick - does anyone think WDW is going to dynamite a hole in the VWL to get EQUIPMENT into that area? FAR better to get those roads in the REAR in shape. I suspect (again, no data) that the pool rework will be toward the TAIL END of the project - not the FRONT END.
So - noise. ALL OF THIS IS OPINION ... but if I were fighting this war? I would use two teams, working from the SOUTH and NORTH of the main lodge. They would establish, or widen, roads toward the beach area. Over a couple of years, the cabins would be built. Tail end? Attack the VWL pool area, from the REAR.
Of COURSE I could be wrong.... but I really doubt Disney wants to carve a path of destruction right THROUGH the lodge - would YOU? OK, given this.... how do get bulldozers INTO that beach area? I don't think they are going to put 'em on the boats

. They tend to be heavy

.
WHY is this important: if you have a gross GUESS at HOW this project can be accomplished, without severe destruction to the Lodge? THIS will give you an idea of where you want to be at any given TIME. Folks - it's a three year project.... that sweet spot at the lodge is going to MOVE as time goes on. I don't think Disney is going to give us any detailed work plans

. From Sept 2015 to (at least) 2017, we're going to need on the ground reports of what is actually occurring - so we can help folks decide where the "best bet" is for booking a room.
Again - I really hope we have a couple of Civil Engineers on the board, that can make a BETTER prediction of how they think this project will unfold. I'm just a dirt tired retired Chemist.... and I'm totally guessing. Please folks - tell me I'm full of dung, and give YOUR better informed assessment of how YOU would attack this project - it will help a whole LOAD of folks.