The regular VIX futures are $1,000 a point, and the options are 1/10 that - $100 a point. So if the new mini vix is also $100 a point, then the existing options are actually a 1 to 1 fit for the new mini-futures. It actually sounds as though the new mini futures were designed to be a better underlying for the existing options than the existing "big" futures.
Yeah it´s an options forum but since you mentioned Vix futures.. I don´t know much about futures so sorry for some stupid questions. If you buy a contract at 20 (seems to be a floor at 10) can you just wait and wait untill Vix reach 30, 40, 50, 60 or higher again as it has done before? I guess if when the contract expire Vix is below 20 then you lose money? Roll over just means that you sell the contract and buy the new one and take the loss? Maybe it´s possible to hedge with options in either Vix or stock index? Thanks!