Nah,... it's not a crazy idea at all!
Billy Furnett, Ghost/FM and Herm did a similar thing about 2 years ago, on a 1/2" 8-track reel. They mailed it back and forth. I even got the reel, but was unable to get my "act" together on the hardware side, then I just posted the reel back in it's unopened box.

That was all due to my shortcomings on certain Tascam 38 repair items that I had pending,... and still have pending today!
As far as cassette goes, at least I feel like I'm in more of a "plug and play" mode, which doesn't require me to fix any hardware before previewing the tape!
It's a good idea, and at least posting a cassette back & forth would be relatively cheap. Y'know,... tape doesn't lend itself to long distance collabs like mp3's and puter recording does, but it's certainly not impossible, and it's probably not the first time someone's thought of it or done it. It's a relatively simple idea, and could be lots of fun!
PS: Sorry for not replying sooner, but my time to post is more limited, and I risk my ass posting from work. When I get home, sometimes I've lost focus of those posts I wanted to reply to. This reply was pending for a day or two, already.
HEY,... I really like your accurate and concise posts and "tutorials" on Portastudio operation! It's really right on the spot,... and saves me a lot of typing!! (Heh, heh). What you've said in your "techical advice" posts has been admirable,... although for the life of me, I still can't see why people find Portastudios confusing!!!
