Uh, yeah Daishi did nearly kill the franchise by making a lot changes the fans hated and casting doubt towards whether a sequel will be made. I know a lot of people skipped out on SCV after they learned about how half-assed it was, and it shows. Is it any wonder why he's no longer in charge? And when he was announced to have left, the reaction was universally positive? Anyways, let's look at the timeline between SC games (not counting arcade releases):
SB to SC - 3 years
SC to SCII - 4 years
SCII to SCIII - 2 years
SCIII to SCIV - Less than 3 years
SCIV to SCV - About 3 and a half years
SCV to SCVI - 5 years and counting
As I've said before, we're in the longest wait between SC games and we don't even know for sure if it exists. I've been waiting for SCVI's announcement since 2014, which is reasonable, but instead all we got was a bunch of shit we don't care about when it wasn't flat-out nothing.