Ask HN: Please (constructively) criticise + advise on my PL concept

I, like countless before, have taken up the rather insane task of writing 'yet another programming language'. I sum up my current ideas here - http://www.codegrunt.co.uk/terse/ Please criticise/suggest ideas/tell me how awfully wrong and silly I am for suggesting such a thing/etc. I am at an extremely early embryonic stage of this project which is likely to last some years, and I would really appreciate some input from the HN community. I know I am potentially breaking a cardinal rule here in not having code to show as of yet; though I certainly do have a plan as to where to begin and how to move forward, it would prove intensely useful to have your high quality input right from the start. Also, if you have any questions I would be more than happy to answer them. Thanks in advance!