So you get 2 x Here Be Dragons? (once as part of the Knights of Pen and Paper 2 - Deluxiest Edition, and another time as a separate key?)

How many keys do you actually get?
Are you able to provide any of the other items' subs? (don't try then in ASF if you already own them, because of the risk of them being activated on top of what you own).

Edit: got the subs from someone else now, thanks

Was writing my own list, but since there's no need, I'll just confirm that these are the same for me (EU PL region).
And yes: KoPaP2 - HBD is included separately, even though Deluxiest Edition contains and activates it. (the dlc is the only thing I didn't activate, and can't confirm the sub though)
To answer the question above, it's one key per sub, same as in your comment.

highest quality games at least

first time it is this quality, all the others are still low quality

And Knights of Pen and Paper 1 in turn is missing the Deluxe DLC. All other games are basically complete editions.

For what that information is worth, I bought the bundle in Nepal and redeemed it on my European steam account.

It's interesting, but I've already had problems with keys for this website, in bundles, or that expire, or are mysteriously withdrawn, that's why I went to see the article and I found the message of blocking by strange country, you can demand indegala What if this is false is removed

Same. Good price to fill in most if not all of the missing DLCs

The next best thing would be BATTLETECH Digital Deluxe Edition. They even contain the same dummy app:

https://steamdb.info/sub/307689/apps/
https://steamdb.info/sub/245788/apps/

With IndieGala, it's unknown.

I haven't had Battletech, but I still feel the same just about getting Planetfall and Pillars complete

I think Battletech is the only game that have multiplayer in it. Even for that the main DLCs seems to be additional mechs, weapons, mini-campaign, missions, stuff like that.

They are relevant for singleplayer as well. The AoW ones adds new factions and campaigns.

Normally if you try to activate a key for a game that you've bought from Steam store, Steam will warn you that you already own the game and the activation won't go through. However for Paradox games, the activation WILL go through and Steam won't warn you about it. So you might end up wasting a key if you're not careful.

To summarize it:
Package 1 contains App1 and App2
Package 2 contains App1 and App3
If you own Package 1, you can activate Package 2 on top of it because it contains something that you don't own already (namely App3). Same goes for packages that have the same apps included, but differ only by one depot (for example, one sub gives you one extra language depot).

So what Paradox does is to add to every package a dummy app that does absolutely nothing and that is not visible in your library. This means that if you'll try to activate a Paradox key for a game you already own, it's very likely that you'll just waste your key since it will be redeemed on your account because of this extra dummy app.
They also find it funny to generate new packages with the exact same content (but with a different dummy app) for almost every bundle and ofc to name them the same.

That's why it's so important to know the exact subs delivered with each bundle, and especially with Paradox ones.

For Knights of Pen and Paper 2 - Deluxiest Edition they actually deliver the store sub in this bundle (so, the exact same thing as what you get if you purchase form the Steam store), and that's why it warned you that you already own that content (obviously, since it 's the same sub, it also has the same dummy app included).
There are a few other items that are delivered store subs, check the full list of subs if you want to find out more.

Best option at the moment (for max CV) would be to go with "BATTLETECH Digital Deluxe Edition" (with the other 3 DLCs a bonus for the winner) and with "Age of Wonders: Planetfall Deluxe Edition" (again with the other DLCs a bonus for the winner). Picking just the base game for the GA would also be a possibility, as the base game is delivered to the winner, and they just get a bonus with it.

If someone wonders about the CV part though, I wouldn't rush making a GA, as it may be worth asking whether there is a chance for "Age of Wonders: Planetfall Premium Edition" and "BATTLETECH - Mercenary Collection" to be added on SG, or whether that isn't technically possible due to some issue about how these are set up?

How does this prevent you from getting it? There's still 35h left.