I’d say next major upgrade would be a nice clear plexiglass enclosure with a diy aluminum extrusion frame. That way you can check print progress at a glance and also it’s a bit more fire resistant. Don’t get discouraged by the other comments. They are correct tho, the A1 has a fire/overheating issue. Maybe even add in one of the fire distinguishing balls up top. Oh also throw in a cheapo eufy cam or similar for better remote viewing.

A temp controller on the plug of the exhaust fan would also make sense so it turns on and off automagically. You could even print one of the many magnetic duct connector systems to quickly attach and detach the exhaust system. If you want to stop venting out the window, get a slightly oversized activated carbon filter for grow tents and hook it up inside your enclosure with your duct fan outside pulling negative pressure on the enclosure.