If you refresh your list, e.g. by entering search criteria, you will find the recent change to title/company will be reflected in the list (I just confirmed it with your example). UI “State” within a web-application is not always as seamless as a desktop app (although we are certainly trying hard to narrow any perceived gap).
To select a specific set of fields in the list: Workspace, Customize Form Fields, click on the small green/red dots, then click on the Horizontal layout option in the toolbar.
The number of records cannot be changed because the list is tuned to operate with the ability of most browsers i.e. some A-class browsers are not yet fast enough to manage large lists. We’ve also made “large lists” fairly unessential because of the amazing search feature offered ;)
Showing title in lieu of having a company is something we are aware of.