I have sort of a constructed language I've been working on. I say sort of because it's not really constructed. It's basically what I think would be an ideal English (or more accurately, Ingvaeonic). It's named Þéodik, which is a cognate of Dutch and Deutsch, meaning something along the lines of "the language of the people."
The vocabulary is almost entirely from Old English, but with some stuff from later stages of English and a bit from Frisian and Saxon (fellow Ingvaeonic languages). It has 2500 words in its vocabulary so far.
The phonetics are from Modern English, so it's easy for an English speaker to pronounce it right. Old English sounds that aren't in Modern English get replaced by the sounds they developed into, generally. Words are also made easier to say in general, less tongue-twisty. For example, the Old English verb "hweorfan" loses its verb ending and gets modernised to "werv."
It has a fairly phonetic alphabet which uses 3 abandoned letters from the Latin Old English alphabet and 1 abandoned letter from Middle English's alphabet.
The grammar is based on Modern English but simplified, normalised, and expanded in some ways. An example of simplification is the perfect aspect, which is formed by simply adding ha- to a verb, rather than messing around with has/have/had. An example of normalisation is that there aren't any irregular past tenses or plurals. An example of expansion is the reintroduction of the frequentative aspect.
Some more detail:
This is what it sounds like:
http://youtu.be/xHyOWMgUK2E