No one's stopping them.
Most are areas that real scientists (as opposed to the "ID scientists") are already exploring, and have been for quite some time. And unfortunately for the ID folks, the results to date overwhelmingly support evolution.
And I'll bet fifty bucks that the actual scientists achieve more results and breakthroughs in these fields than the "ID gang" does in their thousand-year-old fruitless game of, "I know there must be evidence of design in here *somewhere*, if we just keep looking hard enough..."
But as usual, the ID folks manage to misunderstand even basic science -- I love the goofy screwup in this one on your list:
7. Cambrian explosion (sudden appearance of most species during same time period)
Um, no, sorry. "Most species" have appeared in the 500+ million years *AFTER* the Cambrian. Like 99+% of the ones which have lived on the Earth. There are a few hundred species which appeared in the Cambrian. There are over THREE MILLION currently living on Earth (none of which existed during the Cambrian), and countless more which have existed in between (like at least tens of thousands of dinosaur species, etc).
If the IDers can't even get the *easy* stuff right, how can we trust them with the hard stuff?
I find it perfectly reasonable that they should be able to follow whatever lines of inquiry shows promise. Anybody disagree?
Not at all. They're perfectly free to go chasing whatever they like. No one would dream of stopping them.
All we ask is that they stop lying about real science, and stop trying to dishonestly pretend that their half-assed efforts to date are actual science. Is *that* too much to ask?
"half-assed efforts"
the right cheek or the left one?
Maybe a more precise term would be explosion of "phyla."
You might be interested in the description given by Dr. Paul Chien, Chairman of the biology department at the University of San Francisco, after returning from studying the Cambrian-era discoveries in China:
"The general impression people get is that we began with micro-organisms, then came lowly animals that don't amount to much, and then came the birds, mammals and man.
"Scientists were looking at a very small branch of the whole animal kingdom, and they saw more complexity and advanced features in that group. But it turns out that this concept does not apply to the entire spectrum of animals or to the appearance or creation of different groups. Take all the different body plans of roundworms, flatworms, coral, jellyfish and whateverall those appeared at the very first instant.
"Most textbooks will show a live tree of evolution with the groups evolving through a long period of time. If you take that tree and chop off 99 percent of it, [what is left] is closer to reality; it's the true beginning of every group of animals, all represented at the very beginning.
"Since the Cambrian period, we have only die-off and no new groups coming about, ever. There's only one little exception citedthe group known as bryozoans, which are found in the fossil record a little later. However, most people think we just haven't found it yet; that group was probably also present in the Cambrian explosion."