I've finally completed my Widow build with Elude and I'm liking it a lot. The build has 60% positional def before hitting Mind Link, which then puts it up in the +75% positional def.
Elude has insane defense buffs, getting me in the 150% positional def range easily. No need for anything that high, basically playing with the 5% chance to hit from enemies before I hit Elude, but it also grants helpful recovery too and lasts an insane 3 whole minutes! I'd describe the power as over kill, but I also see it as another tool in my toolkit when soloing 'Master of' content where temps and Incarnates are disabled.
Edit: Also meant to add that having Elude available gives me the option to hit a T9 after reviving, which has helped me if I go down right before defeating an AV/Hero. Nothing worse than beating down a health bar for 10 minutes and then right before you land the final blow, their 5% chance to hit kicks in and their attack takes down your entire health bar before either scaling resist bonuses or absorb proc kick in. So revive, Elude, and no need to retoggle anything!