I'm buying Destiny 2 and I'll probably love it, and all, but the presentation didn't sway me that this is a huge leap for the universe of Destiny in general. Maybe you guys see that as being negative, but rather, I see it as a positive. With Destiny 1, it's like we were starved of water -- a basic resource, and we should have had it, but we didn't -- Destiny 2 looks like it'll be giving everyone a huge jug of water; a lot of the things we wanted to have in Destiny 1, but didn't. Larger play spaces, more sub-classes, a bigger, more story-heavy campaign, competitive multiplayer without a lot of one-shot BS (it's looking a lot more like Halo, sure, but Halo, if people recall, is one of the better MP games out there). So, it's more of what we've become accustomed to loving.
That said, it's not some huge leap, and I think that is what a lot of people wanted to see. It has a million and one QoL changes, but it's not like WoW completely -- in fact, some things look simplified. Stats don't *seem* to be there anymore (int,disc,str), so build variety is going to change a bit to be more consistent. A lot of the supers seem to be more for the user of the super rather than everyone else (WoL, WoD for example). A focus on primaries is going to keep MP in line with some of the changes they have made in Destiny 1 -- so if you don't like the meta now, you probably aren't going to like the direction they are going with MP I guess, but 4v4 is actually *good* imo and asynchronous MP modes are really, really fun (evinced by Overwatch, et. al.).
Destiny 2 is not rewriting the rule book, it seems, but it looks like the adventure is going to be bigger, and incrementally better than vanilla D1. We don't know what the future holds -- their content plans are the *most* important thing about the game, and always will be. What do they plan to do on a weekly, bi-weekly, monthly, and yearly basis to keep the universe alive for fans. Now that they have a "new" engine and toolset that in theory makes it easier for them to produce content, maybe we won't have the same problems D1 had. Maybe they will be able to, in an agile and iterative way, stay on top of their own creation, respond quickly to feedback, and add new adventures and modes quickly and efficiently.
People need to accept that Bungie wanted to play it very, very safe with D2. Don't go too far off formula. The title of "Destiny 1.5" doesn't bother me, inherently, because when you think about how close to godly Destiny 1 was, that .5 is a pretty big deal. But we should *all* be very careful not to assume that things are going to be perfect. We need to wait, review, and critique, because as always fans are going to help shape the direction of this game for many years to come. Don't be afraid to call out bad ideas.
And keep your chin up. This is going to be so much fun.