So far we know this about the new mode:
x5 Enemy life
x4 Enemy attack
x3 Exp from the enemies
Also armors will have a chance to have doubled stats (ex.: +7 hero life normally -> +14 hero life from insane + armors), and some armors will require the new lv. 90 cap in order to be weared (so they will got higher upgrades than the current ones).
Other than I think the farming will be better (no more 40^ Oculuses from Moraggo... I hope XD), exp after beating a wave will be higher (think about a faster grinding in Glitterhelm!), but the overall x4 enemy attack will be a huge problem, because enemies will damage towers a lot more.
x5 Enemy life
x4 Enemy attack
x3 Exp from the enemies
Also armors will have a chance to have doubled stats (ex.: +7 hero life normally -> +14 hero life from insane + armors), and some armors will require the new lv. 90 cap in order to be weared (so they will got higher upgrades than the current ones).
Other than I think the farming will be better (no more 40^ Oculuses from Moraggo... I hope XD), exp after beating a wave will be higher (think about a faster grinding in Glitterhelm!), but the overall x4 enemy attack will be a huge problem, because enemies will damage towers a lot more.