1) Please upgrade to 5.1.3
2) It's enough to click the Transfer settings box to popup the Transfer settings dialog. You do not have to go to the drop down menu. So it's only one move click away that it used to be.
3) To toggle common settings, define a presets and toggle them either using the Transfer settings drop down menu or upfront using Transfer settings toolbar.
https://winscp.net/eng/docs/ui_toolbars#transfer

I used to use a rather old version of WinSCP (3.5.6 I think). On that version I used drag & drop to move files to/from unix to windows. I had the 'More>>' button pressed and could easily choose text or binary mode or whatever before clicking 'copy'. Since it remembered the setting to always display 'More>>', it was a simple 1 or 2 clicks to move my files no matter what their freaky extensions were.

Now I have upgraded to 5.1.0, I no longer have the 'More>>' button. Instead I have to click the drop-down menu, choose 'Custom', choose text or binary mode or whatever, click 'OK', then I can click 'copy'. A lot more work and I really don't want to trust the auto settings to decide for me, because my company uses a lot of non-standard filename extensions.

Can the transfer settings be re-integrated into the copy confirmation dialog, maybe as a choice on the programs settings page?

Alternatively, which version was the most up-to-date that still retained the 'More>>' button on the copy confirmation dialog, and can I download that version from somewhere? Or is there another easy way to get back a similar copy functionality to 3.5.6?