I just wanted to reply to your post since no one has yet.. lol
I couldn't tell you if it's worth scoping the mini, but, I'm sure anyone would agree it is definetely going to improve no matter what, unlike the SKS, I hate seeing auctions for SKS rifles that people wasted like $200 scoping it and realized, it shoots just as good with open sights, and sell it because they think it's crap.. People, I suggest hanging on the SKS, it'll be your buddy if you need to use it for anything other then target shooting.
The mini is atleast made for it, and Law Enforcement models I've seen have scopes, so I say go for it =] Good luck man
btw: I'm considering buying a mini 14 or 30, not sure which yet (I like .223 accuracy, and I especially like that I have yet to see a shortage, unlike the 7.62x39, I'm glad Cabelas and other companies are finally offering the stuff, My local gun store said they still are waiting 3 weeks for their shipment, Looking at storing 1000 rounds of 7.62x39 HP, Wolf),
Any Mini-14/30 owners please write in the pros, cons =]
Thanks!