That would be well and good if Destiny 2 doesn't deviate from the original formula too much. That would, however, be a terrible idea if Destiny 2 does a decent amount of innovation (which it should). Let's say they completely overhaul the classes, change the leveling system to be less reliant on RNG, alter how your equipment works, and adds in new innate abilities for Guardians (maybe we can hijack vehicles or dual wield weapons). Allowing you to carry over your gear and abilities from Destiny 1 would break the game or require Bungie to devote a lot of their limited time and effort into ensuring that each and every piece of gear from Destiny 1 carries over without any problems. I'd rather start a new guardian in a Destiny 2 with a slew of new innovations and improved features than continue with my old one in a Destiny 2 that is little more than an expansion.