IMHO it is much too soon to raise the level cap with too little content. I sincerely hope that this isn't the trend for each DLC to come. Raising the max level doesn't give you more content, you're discarding the old content and moving onto newer content... in this case a lot less content.
At the very least, give us a minimum of 4 more planets/ destinations before raising the level cap again. I would very much like for there to be more than one raid per level bracket too. I hope Deej sees this.
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They are catering to the people ac best they can. It's what the masses want.