Grid was an addon that made highly configurable group windows. You could pretty much do anything with them. In that respect I would assume that it is impossible to do that in eq2.
The other aspect of grid that a lot of people liked might actually be doable. It was called grid because it looked somewhat like a grid instead of a few bars with health and mana that are typical in mmo's.
http://media.curse.com/Curse.Project...creenshot1.png
This layout made it much easier to track health of your party as the health bars are huge and color coded. So the less health a player has the bar will go from green to red.