_Havok_ i would just like to thank you for your wisdom in the field of Invul/SS tanks, 6 months ago i played a ice/ice blaster to 26 he's an auto haste/stealth/ss soloer does great, but thats not what this is about :P. I just came back after about a 6 month leave and created my Invul/SS Tanker, which the insipiration of this build was back from watching how insane these guys can be 35+. 
Today i just worked him up to 10 in one session, along with my real life bro who is also following your Spine/Regen Scrapper build, and all i can say is  
WOW! , we are duoing white-orange mix groups in perez and so far only deaths are from lack of respites or dull pain lol. 
The only way i have differed from your design was Quickette's idea of Taunt before Haymaker. Here's how i have mine planned out per that arrangement.
01 : Jab: dam(01)
01 : Temp Invulnerability: damre(01)
02 : Punch: dam(02) dam(3) dam(3) dam(5) dam(7) dam(37) 
04 : Dull Pain: recred(04) recred(5) recred(19) recred(21) 
06 : Hasten: recred(06) recred(7) recred(15) recred(17) recred(19) recred(21) 
08 : Unyielding: damres(08) damres(9) damres(9) damres(11) damres(13) damres(13) 
10 : Taunt: tntdur(10)  
12 : Resist Elements: damres(12) damres(31) damres(33) damres(34) damres(36) damres(37) 
14 : Super Speed: runspd(14) 
16 : Swift: runspd

16) 
18 : Invincibility: thtbuf(18) thtbuf(48) defbuf(48) 
20 : Health: hel(20) 
22 : Stamina: endrec(22) endrec(23) endrec(27) endrec(27) endrec(29) endrec(29) 
24 : Knockout: Blow endred(24) dam(25) dam(25) dam(31) dam(33) dam(34) 
26 : Resist Energies: damres(26) damres(31) damres(33) damres(34) damres(36) damres(37) 
28 : Rage: recred(28) 
30 : Haymaker: dam(26) dam(29) dam(29) dam(34) dam(37) dam(42)
32 : Air Superiority: dam(32) dam(40) dam(43) dam(45) dam(45) dam(45) 
35 : Hover: fltspd(35) fltspd(46) fltspd(46) fltspd(46) fltspd(48) fltspd(50) 
38 : Foot Stomp: endred(38) dam(39) dam(39) dam(39) dam(40) dam(40) 
41 : Conserve Power: recred(41) recred(42) recred(42) recred(42) recred(43) recred(43) 
44 : Resist Physical Damage: damres(44) 
47 : Whirlwind: endred (47)
49 : Unstoppable: recred(49) recred(50) damres(50) 
------------------------------------------- 
01 : Brawl: acc(01) 
01 : Sprint: runspd(01) 
02 : Rest: recred(02)
I did have one question, i do see that despite the occasionaly miss on oranges, i believe i heard you mention we really do not need ACC. in our attacks just would like to know if i should add a acc to each or if we really do not need ACC.
Just wanted to say Thanks again for such a great Guide, it really helped me give myself a direction to work for, which as we all know is half the fun of the Toon. :P
-GRUDG, of Justice Server