I have meditated upon monks for a while, and like meditating by a pond, I wait to see the reflections of others on this.
Human - +1 Skill Per Level, +1 Feat, +1 to 2 abilities (enhancement), more Healing Amp.
The benefit of human in this instance is to further increasing the power of his healing amplification, with both enhancement paths he can get more healing for less AP, and over all moderately fair stat distribution. The skill per level can give you an edge by under developing the int stat. This is also the only race that can give...some bonus to wisdom in action points, so this could be best with a mystic style monk.
Dwarf - +2 con -2 cha, +2 vs spells , +4 AC against giants (a large population in leveling)
Much like human, your not getting any grand bonuses, but sadly, you gain nothing from, Action Points. But A solid choice for a strenght monk, it would make the mid levels stellar, against giants in giant hold, trolls, ect ect ect.
Half-ling - -2 Str, +2 Dex, +1 AC, +jump, Sneak attack actions
The str penalty gives you something of a much minor starting block (a 12, being the point equivalent of a 14) the sneak attack bonuses make up of it. This is by far the premiere monk race, and it is truly hard to justify doing anything other than it.
Warforged +2 con, -2 wis, -2 cha, + Immunities, +Docets
Warforged is a interesting case for monks. A bit of healers friend, a bit of healing amp and you become much easier to deal with as a party member. Light side seems very interesting for sufficiency, dark side seems like giant fists of doom.
Hasted power sun stance is just about the power of wind stance, but with a bit more ki, specially if you could couple it with a docent of quickening. Here's the downside, your wis is low, thus you wont be able to insta-kill fist much, or anything that is massively save dependent. The monk's overlap of immunities does seem weak, but you still have, yet the other awesome immunities, and with proper docet-ing you can have the same amounts of AC.
Elf/Drow +2 Dex, -2 Con
I love elves, but I can honestly say, I find no benefit to the more pointy eared races, as apposed to the halflings.
The Cost of the con almost makes even the most moderate builds loose a few more points in distribution.
Stealth enhancements seem better, but then is it necessary.
Drow could take advantage of a shruken action points, but why.
================================================== =======
Is there any possible reason to make an elf monk? As A fan of the Ebberon Universe, the elves of Phiarlan and Thuranni are well versed in the arts of stealth and over all sneaky ness, and often employ ninjas in their ranks (ninjas and rogues), and the DDO equivalent of ninja, will be the ninja spy PrE of monk (does not exist yet, but the new monk paths are pritty large hints of what they will require).
How does one approach this flavor with moderate success with out nerfing themselves to failure.