No regrets buying my X-T3. I bought it when my X-Pro1 died. I did not like the changes made to the X-Pro3, and didn't care for the X-T4, so I went with the X-T3. I was able to get a great price from BH on a new one. It has been a good successor to the X-Pro1. I would love another body like the X-Pro1, provided they go back to the old OPV, and get rid of the odd screen they used for the X-Pro3.
Had the X-T5 been available when I bought my X-T3 I would have considered it, though the price on the X-T3 would have made it tough to pass up.