Yes, welcome to TF. However, as Pete says, the concept of boat swaps would be fraught with potential issues. I can only see it working between friends who knew each other and their boats extremely well.
However, there's nothing to stop you chartering a boat, set up for the purpose, in the area you might want to sail in that's different from your usual cruising grounds.
I once was part owner of a vessel used for charter here in Queensland. At the time it suited both of us to not part out for the whole price, and there were decided tax advantages for it being in charter. Not the least of which was the charter co kept it nice and tidy, and carried out all usual maintenance. And it actually did seem to be well looked after by the folk who hired it, as we were able to use it whenever we wanted to by just giving due notice to the charter co. The only thing I can think of in terms of damage done in the time we had it was one fouled anchor had to be abandoned, so needed replacing. But that's all.
I had often thought if I ever wanted to cruise up in the Whitsunday Islands, for example, as it would take my whole holiday just getting up there in our boat, I would just charter a similar vessel up there, even though our boat, with a previous owner, had made the trip quite comfortably.