On the topic of the Albino Bun:
I like it. Idk if I like the old one better or not though. Both have their pros and cons.
The new one reminds me of a real albino rabbit, to a point, but I definitely liked the old one's color palette better.
On the topic of the Mega:
I agree it doesn't really
look like a mega, but I like it. I'm not expecting them to (and don't really want them to) change it (at least all that much). There's currently backlash right now, but what if it changes and people like it less? I've never been a big fan of PFQ Megas in general, and find myself disliking a lot of them. (Mega Arcanine, Dragonite, Breloom, Liepard, Pyroar (Not the mega itself, just that it doesnt have male/female variations), Druddigon, etc)
I feel like they were taking the Lopunny approach with Bunbori which I really like. It looks like that tail can really do some damage.
Mega Lopunny becomes a slimmer more streamline Pokemon and it looks like they did that with Bunbori as well.
Mega Lopunny gains a bit more than Bunbori does but I see the similarities.
You can see the differences better here.
It gains the little socks and things on its ears which are hard to see in the sprite. It looks like its wearing a cute lil coat and there are small spines/spikes at the end of its tail. Much like Mega Lopunny, some things move around and some parts are added. I feel like the sprite is just too small to fit all the details they wanted into it. It definitely looks more like a mega in the full art than the sprite so I'd be for changing the position a bit to better show off its differences.