>>34408578I think the issue is more that gen 3's Natures and EV set-up encourages a dumpstat, and in ANY game like this, the most common dumpstat is an offensive stat.
Mixed attackers are discouraged by a combination of the split and the EV setup. Mixed attackers were standard in gens 1 and 2 because there was not really a reason not to. Gen 3 saw limited mixed sets because investing in both was detrimental, gen 4 and onward basically eliminated it because there were now alternatives.
The two ways I can think of remedying the situation are revamping the ways Natures, or at least EV's work, and introducing hybrid moves, and retconning some moves as hybrid. Possibly both.