flaunch mechanism is cool actually, idk how much it matters per se but it’s cool tech

less bot volume due to hooks and need for custom implementation, most of the volume on launch went through V3 pool.

whole v4 works if liquidity goes to v4 only. doesn't make sense for one to pool V2 because V3 is much better due to concentration.

also trading terminals will support only such pools that can be simulated synchronously. not the case with v4 once again unless you have implemented support for this specific hook.
thus trades will go through V3 which will incentivize LPing into it.