Hi @siuwing922, thanks for the post! We heard this feedback from creators and are excited to say that we are building image galleries at the moment 
You can see a sneak peak at the designs that the team is working on and give feedback as part of our Open Studio program here: Open Studio #2: Image galleries in posts
@Metaphorosis that is a great idea! Thank you; I will pass that along to the product team as part of our biweekly feedback meeting.