I read your pdf document on monster damage. I am not sure I entirely agree with the changes you made to Elite and Solo monsters. Rather than up the damage you should just give them more actions/attacks. But I suppose I can post in the other thread.
I find you need to be careful with damage, and stick closely to the 4e suggested range, which works in standard increments. An Elite can do At-Will damage that would be 'Limited-High' for a standard monster, that is +50%, and Brutes do +25%, so an Elite Brute can do +75%. If the Elite Brute is doing Limited attacks that can be another +50% tops, or +125%. For a non-Brute it should be +100%, ie at most double the standard damage expression for a monster of its level. I recommend that as a rule of thumb no single non-Brute attack should be doing more than double standard damage for a creature of its level. Solos should get multiple attacks, preferably spread over multiple initiative counts, rather than a single massive-damage attack.