It's utterly absurd that in 2023 After Effects STILL cannot add arrowheads to paths. This shouldn't even need to be a requested feature. It should be BASIC feature parity between Adobe apps. Absolutely shambolic.
If ever Adobe staff find themselves wondering why users get so frustrated - aggressive, even - then I'll let them into a little secret. It's because of nonsense like this. You're actively making your users' jobs harder through indefensible ommisions.
File this under stupid stuff AE should already have, like colour swatches, text/object styles, usable Libraries implementation, etc. etc.