Re: What I'd really love to see on Linux are proper native ports of:
Textpad?
I switched to Notepad++ on XP very long ago, maybe 15+ years ago. Far better. I even ran it on WINE on Linux Mint for a while from 2016 till I discovered KATE (Mint with Mate Desktop).
I was using many programs on XP & Win7 that were also on Linux before final switch in 2017 (not an exhaustive list)::
Filezilla
Thunderbird
Open Office then Libre Office
Apache, MySQL, PHP etc
Firefox
PuTTY
wget
VLC
The GIMP
Java
Calibre
Ghostscript (PDF and Postscript viewing / export)
Eagle (I've moved to KiCAD, but do have Win Eagle on WINE & Linux Eagle)
Inkscape (I earlier used DesignWorks on Win3.x & XP in preference to Corel Draw).
What's needed is native ports to Linux of leading Windows software for small & larger business of:
Sage & other Accounts.
Payroll
Stock control
Maybe Visio, which MS bought in and has done little to.
Some Enterprise level programs.
Maybe in all less than 10 programs!
Not 2nd rate MS applications for movie editing or presentations.
There are only a few niche things in MS Office that some businesses need. Access is junk compared even to MS SQL. Powerpoint is inferior to many packaged that used to be on Win 3.x! No-one needs it. VBA in MS Office is madness.
Adobe PDF tools are not needed.