I think we can *all* agree, 1k is low. But honestly, how many people who just flagged into T8 have 4 million plat sitting in their bank? Likely only those players who have already farmed HoH to death, farmed extra chaos masks and sold them, made large sums of money from holiday events, etc.
I personally believe the point behind this change is not to make HoH some easy "purchase 75% of your way through the zone" patch, it's an effort to increase the value to platinum. There's no point in adding tokens to a vendor for 8k when I can /tell a person and purchase them from a player for roughly the same price (although they're going to be a lot harder to find now that they no longer drop in stacks off the easier events). Since they were moved to minis, I've gotten 1 symbol (ONE) off roughly 24 minis. 8k per symbol is very unreasonable by many standards, even though I myself have payed more. Even at 5k, I'd likely only purchase a small handful to finish off an item or two, and only if I had an extra surplus of platinum that I knew I wasn't going to do anything with.
But lets face facts. Most HoH trash is a joke. I see maybe 2-3 players a day in there just farming away while their 15 alts/guildies just afk at entrance. Even if the symbols were exorbitantly low, you will still see these people farming trash because guess what, those points are shared across raid. Platinum goes to 1 person.
It's just my opinion, but anything higher than 5k is not even worth putting in. I think a fair compromise is 2-4k (which even then, I'd probably only purchase an assortment of them.) HoH is no longer end game, lets stop clinging to the "You should have to farm in this zone for 3 months to finish your points" mentality, or the "The hardcore players who played the bazaar and have 12 chaos masks in banks waiting to be sold all have 20 million platinum, thus all the fresh players who have just entered T8 probably have the same amount of $$" idea. It's simply not that true.
I understand all your points. You shouldn't be able to sit in whatever plat farm your toon has and get 100% of your HoH stuff from there. But you can't buy augs. Scripted events in HoH may be easy for yourselves, but if you take 2 groups of people in full evolved gear into one of them they are still likely to wipe. Players STILL need to kill trash for augs, still need to kill minis/bosses for tasks, still need to kill events for loot. Putting a reasonable price of 2-3k per symbol does not change this in the slightest. It merely means that you wont have 1-2 DSK3 toons mass pulling trash for the 15-40 toons who are AFK at zone-in/other safe points in zone.
Noone wants to see the hard work of older toons diminished in any way (uphill, bothways), but this is the natural progression of things. T9 comes out, T8 becomes less of a farmfest.
Just mho

Not flaming, just stating my viewpoint because others seem to think "new" players just have a number in their plat slot followed by 12 zeros.