That's really short term thinking.
It might work for a class or two, but eventually VCs will realize that they're getting bad returns from their investments, and YC won't be nearly as attractive as it is today.
For long term success, YC needs to pick companies that will eventually become successful. Particularly the big, standout successes.
> The easiest way to fill that pipeline is to pair current hype XYZ with Harvard (or other ivy league) undergrads (or high-level ex-FANG people). As long as their ROI stays above a certain threshold, that's the main way to scale up YC.
If you think that's the path to good long-term ROI, I have a startup to sell you.