I’m no EE rep, but I can answer question number 2 for you: They won’t say. Frankly, I have no idea if they have plans or not, but if they do, they won’t say, simply because they don’t give out roadmaps—as frustrating as it has been. Case in point, they mentioned one thing they are doing over a year ago, which hasn’t been released yet (for valid reasons) and it’s been nothing but a headache because they don’t release junk, and people keep wanting a faster, perfect product.
The old saying: “faster, better, cheaper—choose two” applies. And EE picks the “better, cheaper” option. Rather, it’s the “excellent, reasonably priced and dwarfs comparable systems” option. But that means no roadmaps or timetables.
BTW, that doesn’t mean they are slow—far from it. Ellislab patches stuff fast—their skills blow mine away, for sure. Just that they take their time to make sure it works right the first time—none of this “use our users as beta testers” bit.
At least, that’s how I understand it.
I hope there are some plans, and I imagine there are, because it’s slightly frustrating for me, too. On the other hand, it’s a place for some entreprenurial developer to get his hands dirty…..
As for your first question, there’s a link I’ll give you where it’s discussed, and EE people chime in. Here. Basically, the answer is, “it depends.” It depends on traffic, what you are doing, etc. Some sites like mine don’t see much of a hit. Others see a pretty major one, I think.
And the Wiki is not run through it’s own parser, as far as I know. So there’s not as many issues.