The Whonix welcome page could do with an upgrade.
Whonix is getting quite polished these days code-wise, better security, more functionality and so on. But being greeted with a mid-90s mockup on every Tor Browser (re-)start detracts from the final product image IMHO. This is particularly true since Tor Browser is at the heart of the platform.
If I recall correctly there used to be a sexy, sleek Whonix welcome page a couple of years ago, but some Tor Browser change (?) broke the appearance, hence the flashback to the old school presentation. I don’t know about you, but every time it opens I feel like I’m back using Win 3.1 & Netscape Navigator is all the rage again 
A rough analogy of the difference a good visual presentation makes is Qubes (yes, I know the example below is the broader desktop, but it has paralells).
Look at what the current (average) icons, menu presentation etc. is going to be transformed into here ->
And compare that to the current Qubes look. It goes from average to great, leaving the user with a sense of ‘more polished’, ‘they know what they’re doing’ etc.
I’m sure any survey here would strongly recommend a sleek change. If we can’t restore the old version, maybe one of the arty crowd would design something sexy and modern.
I also wonder about the white to green fade colour selection. Something more vibrant might work better also e.g. darker blue or something with a high res image of the whonix logo. (The designer crowd would know what works best from general design principles.) That font selection isn’t great either visually; there must be more modern open source options available.
While we’re at it, the “Whonix is experimental software. Do no rely on it for strong anonymity.” line should be reviewed at some stage. Is 7 going on 8 years later really still ‘experimental’?
Relying on TBB straight off the host is actually bad for ‘strong anonymity’, so I think that line underplays the strengths of the Whonix foundational design, particularly since you’ve had the input of a lot of strong devs over the years like Marek and co.