I never watched the original MacGyver, so can't compare the two programs. My understanding is most of what MacGyver did in the original was at least theoretically possible.
Not so this show. This show has MacGyver fashioning a thermal lance from rust and seat rail scrapings. It's fresh out of Gillian's Island, where the Professor would make a nuclear reactor from a couple coconuts.
With the trademark skill of MacGyver reduced to caricature the show is just another team action series like Hawaii Five-O. On that criteria the show is watchable but nothing special. Certainly not up to the standard of Hawaii Five-O with uniquely likable characters and quality actors.
While the acting overall is pretty good, none of the leads are believable in their assigned roles. Mac looks and moves like a fashion model. His bodyguard is supposed to be a special forces guy yet holds a weapon wrong. The hacker girl Riley is more focused on fashion than computer skills. And the leader lacks any leadership characteristics and also doesn't seem to know which way the bullets emerge from.
The plots are the typical James Bond take over the world style cartoony bad guys.
Five stars for a watchable time filler. Riley is likable but the others are lacking the charisma needed for a higher rating. Five stars.