Some ETH LRT projects have tried a variety of methods and cases to maintain the popularity and "extend life":

-Restaking leading projects' multi-season airdrops extend the life cycle, for example, EigenLayer airdrops in three quarters to maintain popularity.
-Join other re-staking projects, such as Symbiotic and Karak. For example, Stakestone's STONE can be deposited in EigenLayer and Symbiotic, two re-staking projects, while Ether Fi provides users with the choice of EigenLayer, Symbiotic, and Karak vaults to earn points.
-Empower LRT protocol tokens and cooperate with re-staking protocols to enhance practicality. For example, Ether Fi platform token ETHFI is used as a pledge target with Symbiotic and Karak, while Eigenlayer allows Renzo platform token REZ to be pledged.