FzeroLet me ask a real question regarding "sandbagging open" teams, this is for the players and the normal open teams at the same time.
Would you care less if you felt like the sandbagging teams that were playing open actually intended to start in open to move up to other divs? What it seems like is a lot of ex-invite players will make an open team, but never truly desire to play past open.
None of the teams we're thinking about as 'sandbagging' (namely, quantum flux and budsquad, but also other teams like mesr's and r5) are good enough to play in invite as they're currently made up so the only place for htem to go is open. I don't love the rule, but as is it's the way it works.
If there were some team who was steamrolling open made up of former invite players I'd rather see them get wrecked in invite than destroy open, but that's not happening. Frankly I don't think any of the 'sandbag' teams are even going to win the division, much less steamroll it.
To actually answer your question, I think most people want to move up whether they practice for it or not. I assume these guys play this game to win, just like we do. Just becuase they can do it without putting as much time and effort in as the rest of us plebs do doesn't mean they don't care at all about it.