So, if we live Sphere in a couple of months or years, we will be downgraded to the last paid version : Studio One 4... and what about our projects ? Because there is no retro-compatibility, we should export to midi and/or wave files ?
If so, it looks more like a trap than an evolution, offering the same rate in upgrade from version 1 or 4 is a kind of forced sale of Sphere, and they may talk about the many things available on Sphere for cheap, it's a bit of a scam because no one needs everything.
Unfortunately it is very difficult to find the conditions of membership, when you pay monthly you should easily be able to take breaks (more or less long, vacation or other reasons) and resume easily as soon as the license is validated for a new month.