This is gonna trigger a lot of Lighter points baggies.(suggestion: sell some points OTC, its not HL, don't trick yourselves) but @extendedapp built on @Starknet has the better architecture and probably worth your time more. The Lighter architecture is a black box. The fees are a fugazi. The documentation doesn't go into detail as to what it runs on - whereas Extended migrated just recently to Starknet and is going to only do interesting stuff from here on out. Once the airdrop and 0 fees go the way of the dodo..there's good reason to believe its over. Starknet as the settlement layer allows Extended to build beyond a perpdex, for example native lending and borrowing market, baked into the perps UI. If your perpdex wants staying power with how HL is going with HIP3/HyperEVM and other primitives, it needs to think outside the box and give a more convincing case.