Right now you can easily create a text field, which is longer than console layout or self service can shown. Workaround is to user text area, which is resizable (and better visible with own button). However not all text fields can/should be converted.
So would propose configurable text field size - options cound be half column and full column. For full columns could also be number of lines (maximum of three).
Alternatively text field hover text could be set to be the "full text", so that if field on screen only shows (e.g.) the 90 first characters, the hover text could show all 255 characters.