[otreva]

@mercime

For #1 above, that works, however that just resizes a 35 x 35 image via CSS to 100×100 making it look very pixelated and blurry.

Here is an example for the BP Members Widget on how to change the sizing without the image being blurry:
http://www.otreva.com/blog/buddypress-how-to-change-avatar-size-larger-or-smaller/