A part of me highly doubt that there will be any "major" changes to DHS or Epcot or anything WDW related. I shed a tear everytime I think of the state Epcot and DHS is in...but in the next 12-18 months Shanghai Disney will be opening which will then affect HKDL.
Yes, they are built in collaboration with other entities, but there is still ALOT of money invested into both of them. The situations and timing is, sadly, very coincidental and comparable to DLP opening and how money was diverted AWAY from DL/DCA.
His presence might be to convince the Board to invest more...or even just to walk around to see the potentials. Nothing will truly be announced until
D23...and even then we might be disappointed. (Im hoping WDW fans wont be...but I am not gonna psych myself out over it) Steady attendance is good sometimes, it means a steady revenue stream. Until attendance drops, there is no real urgency. Look at Animal kingdom, changes really didnt occur to "help"/"boast"/"make more attractive" until the last 4 years.