while yes, 'the smoke room' isn't finished yet like the above-listed are, i would recommend it nestled right between flynn and 'arches' tbh. i feel like 'echo' sets up a lot more breadcrumbs for TSR that are easy to forget about if not immediately followed-up on, whereas 'arches' is still fine to start and be pretty easily-understood if its been a while (in my case, years) since one's last reading of 'echo'. that, and TSR is light-hearted in more places and provides somewhat of a break (or at least, as much of a break as you're going to get) in-between rounds with the emotional heavyweight that is brian😅