Done quite a bit of that.
CCing old film can be rewarding and frustrating. If one of the dye layers has gone a bit south or all the way south there's really not much hope. There's ways to fix it but I think that needs to be done during the scan, once it's video too much data gets lost.

Apart from that if it's just a bit off then the CC tools in Vegas are more than adequate. A lot of old 8mm can be dirty and grainy, too much CC and things seem to get worse. Our trick was to get the visually vital bits looking right, e.g. the brides dress white.

I'm certain if the clients were prepared to pay more a better job could have been achieved but sadly even $1/minute was about their limit. Glad I no longer do this in a way.