LOL, sorry for all the posts but one more thing. The Endless Horizons could also potentially beef up a creature you have equipped with Armored Ascension (in the case you have some). Now not only does this beef it up significantly, add in possibilities like Coat of Arms (again, haha), Shared Triumph, and Wizened Cenns...BAM, even more. Additionally, if you have Concerted Effort active, all your other Kithkin can get that flying and you could unleash hell with enough of'em.
Permalink
Another suggestion, for sake of getting adequate land for things like Coat of Arms, try and get your hands on some Endless Horizons. It lets you remove all your plains out of your deck and from the game, but each upkeep you can bring one of them to your hand. That's basically a guaranteed land EACH turn, which means you'll have enough eventually to play big enchantments and multiple creatures. This is where Coat of Arms could shine.
Continuing on the Kinsbaile thing, you may not have to worry about it dying if you have a lot of Kithkin out (courtesies of Militia's Pride and such) and the opponent has weak creatures. If they but out something strong and do wind up taking out Kinsbaile Borderguard, let loose with the tokens and (hopefully you have some out) beef ups you have set up.
You should also consider Kinsbaile Bordeguard. It's cost isn't too bad (3 mana) considering the fact that it gets a "+1/+1" counter for each Kithkin you control and if it heads to the graveyard you get to put out "+1/"+1" Kithkin Soldier tokens for each counter it had. Now, if you have Wizened Cenns and Shared Triumphs out those tokens will all get beefed up. To make matter's even more crazy, have a Coat of Arms active and all other peeps you have get +1/+1 for each token you just brought out.