I guess it depends on what is meant by "more aggressive". If you mean take more shots, I don't agree. I think he should keep doing exactly what he has been doing. Being more aggressive can mean other things though. For example, I am fine to see him take it to the hoop a bit more. Maybe work on a mid range. Teams are going to rush out at him now that he is established as a 3pt threat. That opens up new things. The next layer of his game he needs to add.
But he has to stick primarily to his bread and butter. This season, he is scoring more points (9.4 vs. 7.8 ) on fewer shots (5.0 vs. 5.6). That is great. He doesn't get many FTs. Usually players who have that kind of points to shot ratio are picking up points at the line as well as shooting efficiently. FTs are easy points but also get the other team in the penalty quicker. That is why I say maybe Grant should look to pump fake the 3 a couple more times a game and drive to the hoop. He may draw some fouls. Maybe draw a second defender to open up an assist opportunity. Gives the defender something else to think about.
Our "second" unit has been some combination of Brogdon, Hauser, Grant, Kornet, and Vonleh. Often it is only 3 or 4 of these with a starter or 2. This group has been great. Brogdon and Grant see minutes also as kind of a first unit extended. I like what Grant is doing He should just keep doing it. If he tries to start scoring more with his eye on his next contract, it could backfire. I mean if he takes 6 shots instead of 5 shots, whatever but I want him to mostly just stay in his game.