Need feedback on custom race: icetroll tribes

[imported_Desert King]

Dear all,

I've created a custom race for a campaign but before i go on i would like to have some feedback. Please think in terms of balance, originality, are there any errors?, etc...
Also tips how to seal leaks are very welcome.

http://resources.hiveworkshop.com/?id=275&s=maps

or try this one:
http://resources.hiveworkshop.com/?s=maps&search=&cat=4&status=non-approved

Thanks in advance,
DK