What the point guard would bring as the lead guard You can smell the fear from Dallas Maverick fans festering across the Internet. Not only is it palpable, but it’s also justified. They are close to potentially losing their second-best player, unrestricted free agent, Jalen Brunson. As a contributor, Brunson is not Kristaps Porziņģis, the oft-injured, underperforming big man maligned by both Knicks and Mavs fanbases. Brunson was one of only two 2018 draft picks former Mavs GM Donnie Nelson hit on over the last decade. The other being Luka Dončić. Over the last four years, Mavs fans watched as…