Sling. I'm not going to reply to your posts bit by bit, as I see no need to. But I'll respond to a few points you made.....
Just taking those:
1. I'd go along with the separate area for indexing as long as it were viewable.
Not being viewable makes the gaming of it impossible for others to detect.
2. dogs, dogs, dogs was a simplification for a jokey little piece on "how would LL explain the use of the special text area". It is after all an explicit acceptance of gaming. An inquiring mind would look at the pages of high ranking parcels and see how those use word repetition. Sort of "dog,dog" as she is spoken.
3. I'd wish for an expanded text area regardless of the existence of a separate index area. It would give people a better opportunity to describe what they are offering and what they feel differentiates them from others. I would seem a shame to ignore the potential richness of this content for indexing.
Perhaps a hybrid approach would work best.
a. Don't index on the current main page content. That removes the urge to uglify it for the benefit of indexing as per your suggestion.
b. Allow an extensive additional text area that is used for indexing. Let people use this anyway they want. They can use it for natural language descriptions, content aimed solely at the indexing, or a combination. I think that to think of the area purely in keyword term would be a lost opportunity. The additional load of a few kb of text per parcel would be miniscule in overall SL storage terms. The current parcel title and description fields simply do not allow a proper description. Those short fields and a list of objects might be adequate for 'yet another store', but they are totally inadequate to describe an event-driven / artistic / wacky / creative location.
4. My suggestion of a completely separate crawler that did nothing but check for exploits would encourage people to use some or most of the extra area for descriptive text. A law of diminishing returns would help that. This would be a benefit to searchers.
If it were the case that there were a ranking reward for stuffing a few kb of ugly, then many would do that and others would feel pressured to follow.
If we are suck with the way that the GSA ranks pages, then a separate negative scoring process would help to offset the downside of that.
5. I simply have a huge distaste for unimaginative muppetry. Sledgehammer approaches such as traffic-manipulation and pick-buying fall under that category. Keyword stuffing is the same. None of that benefits the users. I regard the people who do that with the same distaste that I regard email spammers. I see them as lazy self-centred freeloaders.
Search is still going to return relevant results without the gaming. The gaming is of zero benefit to the end users. The gaming might even be to the detriment of users as they will be presented with high-ranking results for people who might prioritise the gaming over other methods of attracting people. We're talking 'dodgy' here.
Its inescapable that the highest ranked parcels will stand a far higher chance of pulling in visitors. That's a no-brainer. That's why people want high rankings.
It's just plain offensive that people would get rewarded for muppetry over people who play it straight. The effect is to try and make muppets out of everybody.