Allow for color-based options for the UI. Having everything a pale shade of gray is displeasing and seems “messier”, in my opinion, since there are no easily identifiable color blocks, color lines, or color fonts.
Also, it would be great to not have to wait for each changed item to take a few full seconds before being able to click another item (e.g., sending an email: click “A” to change font size, then you have to wait for that to take effect, then you can re-click the “A” for font color and change it, wait again. Click “A” to change highlight, etc.)(another example: changing any statuses on a lead, have to wait for each box before the page will let you leave because it’s still trying to save all the changes. I much prefer to click all things I want, then click “save”).
Last idea: the auto-correct in HubSpot doesn’t actually let you correct in the box. You cannot right click the word or highlight it and right click. If you do these things, the misspelled word may look “normal” because the red line went away, until you start typing again, because it didn’t change anything. The word is still misspelled and you have to manually go back to fix each time.