I had a thought, what if instead of reducing LA to meet underpowered templates you instead buff the templates to meet the LA?
With this in mind I created this:
Power Level.
Power level is the sum total of a creatures racial HD and its level in all classes.
For example a nymph druid 5 has a power level of 11.
Half Celestial.
[spoiler]
LA+4
Size and TypeSpeedSpecial AttacksDaylight (Su)
Half Celestials can use a daylight effect (as the spell) at will.
Smite Evil (Su)
A number of times a day equal to its power level a half-celestial can make a normal melee attack to deal extra damage equal to its power level (maximum of +20) against an evil foe.
Abilities
Increase from the base creature as follows: Str +4, Dex +2, Con +4, Int +2, Wis +4, Cha +4.
Skills
Skill PointsArmor Class
A half celestial gains a sacred bonus to AC equal to its power level.
Spell Like abilities
As a half celestial grows in power it gains the ability to use many spell like abilities, To use any of these abilities the half celestial must have an intelegence or wisdom score of 8 or higher.
Power Level Abilities
1 Protection from evil, bless, detect evil
3 Aid, Align Weapon, Remove Paralysis
5 Cure serious wounds, neutralize poison, remove disease
7 Holy smite, Divine Power, Death Ward
9 Dispel evil, hallow, Rightious Might
11 Holy word, True Seeing, Heal
13 Holy aura, Forbiddance, Resurection
15 Mass charm monster, Greater Planar Ally (Good Outsiders only), Sunburst
17 Summon monster IX (celestials only), True resurection, Miracle*
*Unlike usual spell like abilities, you must still pay the appropriate xp cost for a miricle.
Caster level equals power level and DC is based off your choice of INT WIS or CHA (chosen upon acquiring the template).
These abilities may be used a number of times a day equal to your power level minus the required power level of the ability. For example a half celestial fighter 10 may use protection from evil 9 times a day. Once a Half celestial has 10 or more uses of an ability per day that ability is then at will. [/spoiler]
Thoughts? is it worth 4 LA? I still don't think so, possibly 3 so it obviously needs more power. That much LA completely screws over a caster but for a melee character the utility of the spells along with ex flight etc it just might be.