I'm assuming that the kind of finder you want us to aspire to be is the Tactician, as it was the only one you described with any positive attributes. But it was less clear what kind of hitter you prefer to have on your friends list.

I've finally gotten to the point where I feel like I can contribute to my friends this event, and I've become a poke/prod hitter, mostly because at 500K my SED is now high enough to take out all of my own EG finds within the time limit (if I have to), and I can usually spare a few focus points for support sometime within that limit when friends put up SEGs. I felt bad because I hit the full attack without thinking on a very low level SEG once and have since made sure I leave enough inhibition for everyone.

I'll admit to being a siren finder, but mostly so that my friends can always get in on the kills if they so choose. I do it even on EGs...the support rewards aren't that great compared to the other rewards, but I put the option out there anyway, and I hope it isn't seen as a bad thing. Usually, I'll dump a full load of focus (or two) on it first, then call for support. It's kind of all I can do at my relatively low-power level of play.