So, from what I can tell, Squared gives you a visual representation of the character's health and targets them when you click their square, right?
Should definitely be possible. There are many play styles and this may fit you better than the styles that the existing raid / group windows are designed around.
I personally use FetishNightfall so that's the one I'm familiar with. I believe Profit has similar features as well. With Fetish, you can configure the three buttons to do your single target heals. You can then target the primary person you're going to be healing (main tank) and keep them targeted at all times. When you need to heal anyone else, you just click the 1, 2 or 3 button next to their name. This will cast the heal on that player without ever changing your target. You continue to target the main tank but you're able to spot heal anyone in the raid you choose. Same thing with cures. You click the detrimental effect icon (Trauma, Arcane, Noxious, Elemental, or Curse) next to their name and it casts the cure on them without changing your target.
It sounds like the problem you have with this method is the size of the raid window making things hard to see. If that's the case, I'm curious about something. All the interfaces are designed to look a certain way at certain resolutions. I recently got a new machine and tried out the game at 1920x1200. Everything was too small for me to see. I started adjusting the fonts on the things that allowed it but you can't change the font on everything without re-writing the UI. The reason everything was too small for me was that my new machine is a laptop with a 17 inch display. 1920x1200 on a 17 inch monitor makes everything really small. I'm sure it would look great on my 24 inch at work but not the 17 inch. I changed the resolution to 1440x900 and now everything is big enough to read and easy enough to tell what's going on (granted, with less screen space since everything is bigger). What resolution are you running and on what size monitor? It could be that simply lowering the resolution a bit might make the existing windows big enough for you to easily tell which one you are clicking on. Just a thought.
It may sound like I'm just trying to convince you to use the existing raid windows. That's not the case. I just want to make sure you know the full capabilities that exist so you can make the best decision for how you choose to play. It's a game we all pay to play, play it the way that makes you happy.
