What would you like to have changed or added to Vampirism

Please add an option to re-position the Skills button in the inventory button. This overlaps with other mod buttons. The other mods it is overlapping with do allow for re-positioning, but I would have to space them out around the Vampirism Skills button making their grouping (otherwise by mod) awkward.

Does this make the mod experience more balanced?

No change to balance.

Can you provide additional resources (etc. textures or models)

Quark is a good example of the button overlap if you want to try it out.

Good point.
For now you should be able to deactivate the button entirely in the (client) configuration. You can still access the skill menu using the assigned hotkey.