Life will go on as per normal. LKY has not made an impact for many years now, hence we see the badly thought policies and haphazard implementation. The only difference is we will have an additional holiday and a new memorial shrine as tourist attraction.
I agree that nothing will change -- which means that we will continue the current downward trajectory that we have been experiencing, with weak leadership and indecision crippling the government.
LKY, despite his many flaws, was the only true politician left in the government after the likes of Toh Chin Chye, Rajaratnam, Goh Keng Swee etc and then Tan Cheng Bock, Tan Soo Khoon and his friends were systematically culled and replaced. The current cabinet is full of technocrats, civil servants and pen pushers who have no idea what it means to be a politician. Even Khaw Boon Wan who is the PAP's current chairman (!!!) admitted that he is not a politician, and he says that as if it is a good thing.
The vast majority of the cabinet is made up of former scholars, former PPS'es and former military men. They are experts at pen pushing, cover ups, and writing theoretical papers. But they absolutely suck at implementation and they are totally hopeless in terms of constructing and then selling a vision. If Singapore continues down this path, and remains as an administrative state, then we are done for.
What needs to happen for things to change is a SPLIT within the PAP. Some say that this could happen after LKY's death, with potentially Goh Chok Tong leading a faction of his supporters like Lim Boon Heng and George Yeo back into the fray. That was once a plausible scenario but now all of Goh's supporters have been removed as well, including Goh himself.