I don't disagree on any particular point here .
I'd also state that there is a discrepancy between how good drains are at different title levels (TL5 characters get drained for ~650 skills / 200 AAO (I think?) without procs with a starting AR of about 1500. TL7 characters get drained for ~750 skills / 300 AAO with a starting AR of about 3000. That doesn't really match up!). Either drains are too good at TL5, or not good enough at TL7, or somewhere inbetween, because the relative power of them should be the same (or if anything better at TL7 - a trader really shouldn't feel like they are gimping themselves by levelling!).