I've done a couple hundred matches this week and have only run into 2 people jumping a lot. I didn't report either of them. If I could right click the name and report after a match or something I probably would.

I do take the time to fill out a "report cheating" ticket however for people I see obviously botting. There are 2 of those I've seen that will auto join the match, proceed to automatically use all of their buffs and then 1 just stood there while the other would target a team member and use follow on them. When I see them in a match I ask everyone to report the person.