Melee + Beams = The Most Skill
In my opinion it isn't how exclusively you use something that determines how "skillful" you are, it's how successfully you can mix it with whatever else you have at your disposal to come up with an unbeatably lethal combonation. It's all about adapting to what is going on around you. If somebody is charging up a kame off in the distance and you know you could take him because your power level is that much higher you use a beam, because the massive explosion that will result is more likely to do more damage and boost your power level more in a shorter amount of time than chasing him with melee. If somebody has been swooping at you in a predictable fashion and you don't want to smash forheads with him you back up and tag him with a generic beam when he isn't expecting it. If you have 4 people tightly compacted together swooping at you ya charge up a mouth beam and try to take two out with it.
Beams have their uses though melee would seem to be the staple of the game. I prefer to put them together. Just being able to switch to generic beam and fire isn't skill though, it's the act of teleporting out of the way, aiming, charging, releasing, and then being fast and accurate enough to target your enemy again before he smashes you in the ribs.
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