Optimizing a grappler druid build

Question

I am about to start on a pre-made adventure, for which I intend to use a grappling druid. We are allowed only to use core books & the complete series, I have the following concept in mind and would like to know if there are any further ways to optimize the build.

Base stats

Human (Stats were point buy; allowed only 1 value below 10)
Str 10
Dex 10
Con 18
Int 10
Wis 16
Cha 8

Level progression:

1 Monk (1) (for improved grapple & wis to AC)
2 Druid (1)
3 Druid (2)
4 Druid (3)
5 Druid (4)
6 Druid (5)
7 MoMF (1)
8 MoMF (2)
9 MoMF (3)
10 MoMF (4)
11 MoMF (5)
12 MoMF (6)
13 MoMF (7) (for extraordinary wildshape)
14 Warshaper (1) (for crit immunity)
15 Warshaper (2) (for the stat gain)
16 Nature's Warrior (1) (for Serpent's coil)
17 Nature's Warrior (2)
18 Nature's Warrior (3) (for Armor of the Crocodile)
19 Nature's Warrior (4)
20 Nature's Warrior (5) (for Wild Growth or Earth's Resilience)

Feat Progression:

1 Endurance (Reg) & Combat Reflexes
3 Alertness (Req)
6 Hold the Line (to grapple a charger and thus prevent damage)
9 (Multi-attack)
12 (Improved Multi-attack)
15 .. 
18 ..

The feats are my biggest issue, I do not know of that many feats from the core/complete books that are very useful for a grappler build. I put multi-attack and improved multi-attack between parenthesis because they were two of the feats that I considered but are all not that great for a grappler build.

TL:DR How can I maximize the chance to succeed in grapple and my grapple damage using the above listed character concept (swapping class levels and feats are allowed) within the listed constraints (core & complete books only).

Answer 1

I'll be challenging your build a little.

First of all, your BAB:
0 from monk 1
3 from druid 5
5 from MoMF 7 1 from Warshaper 2 5 from Nature's Warrior 5

14 is 1 less of what a pure druid could have had. Now, you could get the same amount of flexibility of those 7 MoMF levels and the 5 warshaper levels you didn't get by going druid 17 and getting the long-lasting 9th level spell shapechange. Keeping it active all day requires a metamagic rod of extend and very costy pearls of power 9 but (even by memorizing it several times and spending all your 9th level slots) it lets you cast 8th level spells, compared to 3rd level spells of your build.

I will not go into a searching frenzy here, but the chance that those spells can be create for improving your grappler ability (or to give you some other way to win for when enemy casters start having freedom of movement effects) is high.

Were you using wildshape, you could have used a Wild armor to get some AC, it's true, but it looks to me you were looking for more touch AC anyway. Getting a monk's belt only works while you're taking forms that can wear it but it's better than that monk level. You don't seem to really need that many feats (here I could be proven wrong).

Druid 15 / Nature's Warrior 4 / Fighter 1 could recover half the feats and gives you 16 BAB, shapechange, Serpent's Coils and given AC is easy to bypass at high levels I'd suggest Claws of the Grizzly instead (but that's not this much and you can take Druid 16 / Nature's Warrior 2 / Fighter 2 instead losing 1 BAB and gaining 1 feat if you're really feat-staved).
Change that to 16 / 2 / Warshaper 2 to get the Str increase if you have enough feats already. Since you're using natural attacks, it's as good as BAB.