What? Film? Aren't we all supposed to migrate to mirrorless digital?
On the serious side, are you getting your film processed locally, shipping it to the processor, or processing it yourself?
WM
I seriously doubt there will
ever be a mirrorless camera around my neck!

If I was ever to make a big change in format over 35mm and 2¼ I might take the plunge and get a 4x5. My enlarger only goes to 6x7cm so I would need to get another one to handle large format. Of course I could scan the 4x5 negatives but what would be the point? Nothing in the digital world, regardless of format or mega-pickles, can remotely
touch a 4x5 negative for sharpness and dynamic range. Of course your available range of lenses is very limited for large format compared to 35mm or digital. In medium format, no one I am aware of makes anything longer than 500mm, which is really only about the equivalent of a 300mm lens on 35mm.
When it comes to processing, I do all of my own B&W, C-41 and E-6 processing and printing though it has been a while since I have shot slides. But now that Kodak has brought Ektachrome E100 back from the dead, that will most likely change. Processing color, especially C-41 is as easy as B&W. The only thing that is more critical than B&W is temperature. I have a 4 well, thermostatically controlled and circulating water bath that I use to maintain all the chemistries (in 1L plastic beakers) as well as my stainless steel tanks at the processing temperature ±0.25º F. Depending on the process and kit manufacturer, developer temperatures range between 101-102.5ºF. The water bath makes processing a snap! I built a film drying cabinet from 1/2" plywood that uses a heating element on a dimmer switch and a computer cooling fan a long time ago and it still works like a champ. Removing dust spots in PS is a snap but can be a real PITA on prints, especially color!