Some comments on things already stated:
One thing I wanted to add to the shortened hatch time for starters. Ashmee basically said everything I had on my mind. I think it would also help if all the pets had basically the same hatch time, just so everyone has equal footing. Not sure if this will be noticeable with shorter hatch times, but others like myself who picked an egg that took much longer to hatch is already a bit behind on hoards compared to others who also started as soon as the beta launched.

Also to reiterate on the colours. Yeah, to be honest, I thought the 50% Brown, 50% Blue was actually about their colours, not that they have a 50% chance to be assigned either at birth. I mean it makes more sense now, I was wondering why you were telling me the percent at which the colour is present on their bodies xD

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Okei, So on to my actual ideas.
Sorry if I get really ambitious with these? I have no experience with coding so I have no idea if any of these are way out of scope. More just my wishlist, if you will ;; v;;

User Page Features: I know 'about me' sections for the user has already been suggested but I just wanted to add on some things. Obviously, an area for people to add some flavour text and introduce themselves when you view their profile is very important. I think it would also be nice to have a friends list. And maybe a highlight pet area or 'featured pet'. That we can pick a pet to showcase on our profiles.

Other features that might be nice, a comment section for people to leave comments on your profile. A recent forum activity. Because if you're like me, you use this all the time to re-visit forums you just posted to.

Pet Pages: I find with most pet games, you want to make your pets your own, and you want to show them off. I just realised you can't even click on other peoples pets when you visit their page. I'd love to be taken to a separate page where you could view them individually, and maybe read tidbits about them that the user has created. I think lore and personalising your pets is a really important part of a pet site, without that you're just sort of collecting pictures with no substance. And since everyone's pets are going to look the same there's even less of that. Even if for now it just means that other people can view them the same way you can when you visit your Pixpet Inventory? (If this already possible and I'm just dumb and can't figure it out, I do apologise ; v; )

Time stamps for Badges: Kind of a minor thing, I think it would be a neat idea to archive the date we receive achievement badges. i.e. Earnt 17th September, 2018. Or something like that.

Badge Feature: I have yet to exceed any limit to the number of badges that will display alongside your user profile on the top right. So not sure yet how this feature works, but I would appreciate a way to arrange/select which specific badges you'd like to showcase and in what order.

Proper Friends List: It seems friends are just automatically accepted, with no notifications when people try to friend you? Not sure if this is a bug or just an interesting take on friends lists. I would prefer a proper friend system if it was the latter?

Forum Signatures: Pretty self-explanitory.

Move Some areas: I only just realised the credits was listed under the forums and help. Honestly my first guess to look for it was at the bottom of the page next to the contacts. Or if it could have it's own area. Just seemed weird to me to have it tucked away in the forums hub. Same can be said for the userlist. Maybe the two: userlist and the credits, could have their own tab?

User made content: OK, so this one I know for a fact is waaaaay more ambitious, and I wouldn't normally lump this in with the others since I think the above are more important for the short term. I'm just putting this here for more of an interest check and maybe just to raise the idea. But like other pet sites, I like to frequent, there is usually some way for users to create their own art, like skinscents in FlightRising, or accessories in Dappervolk. I think any system to allow artists to create things to enhance their experience or to turn a profit would be appreciated.