Made with personal use in mind but shared here so that everyone can benefit.
http://te4.org/games/addons/tome/classic-ui-fixes
Updated to b42.
Currently includes:
1. Buff removal quickfix.
Allows removing beneficial effects with but a click.

2. Solipsist combined life-psi bar.
Shows the 'real' damage you can take.
Divides the bar into two parts, blue one corresponding to joint life-psi resource and red one for remaining health if any. Remaining meaning when psi runs out due to damage.
Adds a little star shaped marker for the solipsist speed threshold - the point when you will start losing global speed due to insufficient psi.

3. Icon hotbar buffer.
Lets you squeeze the icon hotbar. Useful for multi-row organization of skills on wide resolutions.

Adjustable via Game Options menu.

More might come if I ever feel like I need something else.