[Updated]
1.

2.

Advanced at the top, right?)3.+4.

... to replace just 2 zeros is bad+ Create new account sounds like the account doesn't exist yet - but it does, it's just not shown.

I agree with all your points, except with hiding addresses of accounts. After seeing them many times, you start to remember which address refers to each account, and this improves security.
I appreciate the feedback.
Updated! Feedback integrated! Thx.
Proposal 3. and 4. looks good, I will try to implement it.
Regarding the sidebar I will implement concept #1 from @GBKS which you can find here: https://www.reddit.com/r/Monero/comments/c23zxn/feedback_request_ideas_for_improving_how_multiple/
@GBKS #1 brings tears to my eyes! (Sorry!) I totally understand his intention, but:
Account above Wallet" in the menu is so misleading (wrong hierarchy)! And then Accounts below Wallet adds confusion.Alternative proposal:

(Ignore the changes from #2298, #2304, #2325, #2339.)
I鈥檒l have to think about it. What about making the whole Account #0 Retirement Savings area clickable and this brings you to the account page?
THAT WOULD BE INCREDIBLY NICE! It simplifies visually, it doesn't bother average users who don't use multiple accounts, it reduces potential account hierarchy misinterpretation, it still allows 1-click access to Accounts, and it can't get any more intuitive than clicking on the account to change the account!
My only requirement would be:

Great discussion here. I agree with the detail improvements in the accounts page, but disagree about the accounts/wallet hierarchy.
Underneath wallet, we find accounts, address book (used in all items underneath account), settings (+ subitems) and advanced (+ subitems).
Underneath account, we find send, receive, and transactions.
I think it's important to be clear about this and label things appropriately. I'd also argue that generally interfaces are not more intuitive because there's less in them, but because they do a better job at explaining what's going on - so in this case I'm not concerned about the complexity. It's problematic when you're hiding a whole top-level feature underneath a pretty thin arrow in the corner of another element and rely on a hover-state for people to discover it. Obvious is better here.
I'm also not sold on the "normies don't use accounts" argument. It's a very new feature in the GUI, we don't have analytics, so we just don't know how how people want to use it (let me know if you have some info on this). Maybe people love it if we just treat it like a real, useful feature?
And a small note, I find that the grey logo looks disabled. I'd make it colored. Or maybe it can be grey while syncing, and colored when ready to transact?
Love the discussions. It's a great place when you're discussing such details, it means a lot of bigger things are in good shape.
It's problematic when you're hiding a whole top-level feature underneath a pretty thin arrow

According to your proposal we would have Account above Wallet. This is confusing because it reflects the wrong hierarchy. And as if that was not confusing enough, your proposal also has Accounts below Wallet.
We don't need to introduce a separate section Wallet because the whole window already is related to the wallet, which hopefully soon will be reflected by the wallet name in the title bar (#2325):

let me know if you have some info on this
I just started a small poll:
https://www.reddit.com/r/Monero/comments/cxesm4/poll_to_find_out_if_the_monero_gui_should_be/
And a small note, I find that the grey logo looks disabled.
It doesn't look disabled to me but if it looks disabled to you, it probably also looks disabled to others so we should change it!
@GBKS what you're aiming at is ABSOLUTELY right! But IMO it would require a much deeper redesign like #2367.
Closing this because it's bullshit compared to #2367.
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Updated! Feedback integrated! Thx.