Jame and Cadian are good IGL's, Jame can also frag but those frags tend to have limited impact.
Elec's Navi has done very little. Honeymoon at blast, a solid Cologne admittedly, and a terrible pro league.
BlameF cannot call for a winning team, because his calling relies on him alone, in a similar vein to Hampus.
Why do you think that fragging IGL's went from being super popular in the early days of CS to teams wanting tactical IGL's nowadays?
Because fragging isnt everything.
A team of SImple, Zywoo, Niko, Device, Axile wouldnt work cause they'd have no tactics. also because simple and niko would get toxic after losing the pistol.