Gauss is a hell of a lot more fun than Volt ever was. Making use of his 4 with any battery weapon or the gunblades leads to some disgusting levels of DPS, and there's no better "oh shit" fixer than Gauss. Can't tell you the number of times I've been able to save a point because I just barreled through with his 1. His 2 is solid defense as reflecting 100% of incoming damage usually is, balanced decently by the fact that it's not all damage (just the ones most commonly seen), and his 3 is an interesting CC machine.
Is he a god? No. Is he Baruuk? Thankfully no, he's actually useful. Is he fun? Hell yeah.