Your jump from MIUI should feel like night and day difference I presume. You are also right on the fact that I do want to try out android 13 just to try out the newness. Though I am aware that the changes between android 12.1 and 13 is pretty minimal.I moved directly from stock MIUI to this ROM.I don't know the diffference from A12.1 to A13,more than I'm very glad I changed from stock MIUI.If your satisfied with Arrow and everything works as you want,I suggest you to stay on Arrow.If you're like me,curious to test latest,I can really recommend this ROM.Stable enough and few annoying bugs.Just be sure to erase and format Data,to avoid strange behaviour. One of many things I love,is the ability to spoof to get unlimited Google Photos backup.Is that possible on Arrow? Is Videorecording on Arrow with audio?
ArrowOS is amazing. You should give it a try. It does have unlimited photos backup in GP. And I'm using the MSG camera with a config for this Rom, and I must say, poco X3 can take some amazing photos as well as pretty decent night shots with my current build.