Using Aero to create AR experiences has been amazing. The ability to create and publish so quickly is pretty exciting, and with the introduction of Geospatial Creator being able to anchor at a location is a game changer. But the limiations are an issue e.g. Experiences only working on ios currently and users having to load the Aero mini app to play the experiences can be one click to far. So a couple of questions:
1. Are there any plans for Aero to be able to export USDZ files so that designers can let users experience the AR projects via web pages and AR Quick View?
2. Reality Composer appears to be a intersting alternative to Aero but without the Geospatial bit is it worth exploring?
Can only really answer your second question as I have used it a bit. Theres no reason not to take a look at it. It offers pretty much everything Aero has and if you know Aero you can learn Reality Composer in an hour or so. I believe the latest beta version which may not be availbale unless you are signed up as dev, has a basic particle system now which is pretty cool. The biggest drawback as you know is the lack of world anchoring or Geospatial tech that is only available through RealityKit or the coding side. So I think at this stage it is Aero 1 RC 0 until Apple catches up on this side of things.
Almost forgot. RC also as simple rigid body dynamics so you can create basic dynamic games as well.