While I like simple UIs like yours, I absolutely hate those pixelfonts
I'd prefer the range display closer to the center because it is much more relevant than the boss frames (which are pretty close to the center).
I suggest you filter the buff display at the upper right corner a bit.
E.g. only buffs with a duration > 5 minutes, a different raidbuff tracking etc.
Regarding the Memory usage display:
Get rid of it (e.g. remove that feature from the latency/fps AddOn you're using) because memory usage isn't as important as CPU usage (and using a display for unneeded information is unneeded cpu usage
)