From the roundtable statement:
"When the usage of litecoin block capacity is over 50%, we will start to prepare for a solution to increase the 1 MB block size limit through a hard fork or soft fork."
This decision sets an important precedent: blocksize increase is agreeable to the much of the community when blocks are 50% full. Assuming segwit on litecoin activates and works well, Jihan and friends can say, "We agreed to these terms on Litecoin, and we'll do the same with bitcoin. But since bitcoin blocks are already over 50% full, we want a hard fork blocksize increase that also includes segwit." And that will be a reasonable position, widely seen as a compromise. If Core disagrees, they will become the obstructionists, blocking bitcoin's progress on idealogical grounds.
Jihan's logical next step would be to flood litecoin with transactions to get the blocksize increase discussions started quickly.