Looks nice for this year, sure... but, would be a disaster for years to come. Our rotation next year would be Teheran and Wood in that scenario... and we would be force to fill with Hale and..? Sure, we would have some money to spend... but, I don't like leaving 3 holes in the rotation after just one year that all need to be filled at once.
Also, Betts is just a prospect... not proven. A ton of People on here still want TLS up, and he was having a great year last year... this year, not so much. I hope he turns it around... but, I don't think you trade a 'proven' arm like Minor (and deplete our rotation both this year and next) for a unproven prospect, when it isn't likely he will put the team over the top immediately.