Just for fun, I put together a 20th level ISF Tank build. Nowhere near high-op, but I think it should be playable at most tables.
Earth Dwarf Lawful Incarnate 8/Crusader 1/Incarnate +1/ISF 10
meldshaping as Incarnate 18 (22 ess, 8 shaped, 5 bound)
Bind to crown, feet, hands, arms, brow, shoulders, waist, heart (no throat or soul)
BAB 12/7/2
3rd level Crusader maneuvers (WRT, Shield Block, Mountain Hammer, 2 others, + stance, probably Martial Spirit)
Incarnum Radiance 2/day (+ 2 melee attacks)
Feats:
1.
3. Expanded Soulmeld Capacity
6. Bonus Essentia
9. Stone Power
12.
15.
18.
Soulmelds:
Incarnate Avatar (Soul)(+1 insight to hit per ess)
Bluesteel Bracers (arms)(+2 init, and +1 damage/ess)
Crystal Helm (Crown)(+2 vs charm/compulstion, and +1 deflection AC per ess)
Vitality Belt (Waist)(+4 Con checks, and +ML/ess hit points)
Spellward Shirt (Heart)(SR 5 + 4/ess)
Lightning Guantlets (Hands)(1d6 electric damage as touch attack, std action, +1d6/ess)
Mantle of Flame (Shoulders)(1d6 fire damage to attackers, +1d6/ess)
Airstep Sandles (Feet)(fly 10, fall at end of turn, +10'/ess)
Shield Bond (resist energy 5/ess)
Armor Bond (DR 1/- per ess, stacks)
Weapon Bond (+2 damage/ess, and fort save vs daze)
Bound:
Bluesteel Bracers (+2 init to party)
Crystal Helm (melee attacks have force descriptor, effect incorporeals)
Airstep Sandles (fly at perfect maneuverability, maybe don't have to land?)
Vitality Belt (immune to con damage/drain)
Lightning Guantlets (damage applies to one melee attack/round, no action)
I'm not quite sure what else to pick for feats, and I haven't even thought about equipment yet other than using Adamantine Full Plate and probably a Dwarven Waraxe. Probably make it and the shield both Spiked (+1 Defending) for the extra AC boost. The basic idea is to beat people's faces and be very resistant to HP damage. A high AC combined with DR, Stone Power, and Vitality Belt should accomplish that. He shouldn't be a slouch damage-wise either, because of Weapon Bond, Bluesteel Bracers, Lightning Gauntlets, and Mantle of Flame (those last two will probably be unpowered most of the time though).
He overcomes the normal dwarf maneuverability problem via Airstep Sandles, which overwrite his ground speed with a fly speed of 10 + 10/ess. If it's ruled that the foot bind gives a permanent fly speed, so much the better. If not, there's items.
Normal essentia loadout would be something like 4 each in his weapon and armor, 6 in Incarnate Avatar, and 5 each in Bluesteel Bracers and Crystal Helm. As the fight goes on, some of the essentia from armor and Helm would get transferred to Vitality Belt to soak damage. Vs spellcasters, just swap essentia from Crystal Helm to Spellward Shirt and Armor Bond to Shield Bond.