Meh, I suppose a reasonable argument could be made for almost any publisher at this point (thanks to the arrival of Activision), LA just seems too unlikely to me since they don't seem too friendly towards the whole "DRM free" idea, while EA is one of the companies that has been burned by excessive DRM and has been somewhat softening to its use lately, at least in regards to its older titles.
I'm afraid your math is still wrong, the last week of January was not part of the "Month of Activision", only the last few days of January were, since the original announcement was made on a Thursday. Therefore the "Month of Activision" did not start until that day, making today exactly 4 weeks later (well, technically 4 weeks plus one day):
First week is Jan 28th - Feb 3rd: Arcanum, Gabriel Knight
Second week is Feb 4th - Feb 10th: Vampire Redemption
Third week is Feb 11th - Feb 17th: Space Quest, Phatasmagoria, Caesar 3
Fourth week is Feb 18th - Feb 24th: Interstate 76, Gabriel Knight 2
Today, Feb. 25th, would be the start of week 5, but assuming they don't throw us any surprises this weekend, its just the last day of the "Month of Activision" with the release of Call to Power 2 and the King's quest games.

I have that same wish. I would love to replace my... less than legal copies of both games.

Bloodlines would be awesome too (as I've completed it, yet never bought it ¬¬) but I don't see them dropping the price to $10, unfortunately.

It has been a 5-weeks month, so a wicked month anyway (no, seriously) :-P

There have been some good games during the month, but sadly for me I already have many of them and the rest I have little interest in.
Arcanum, Gabriel Knight I've got and enjoyed, also got Caesar 3 but never played it. Played some of the KQ and SQ games before and no interest in playing again, and I have CTP2. I hope some more obscure but forgotten classics show up soon. It's nice that I've not been tempted to buy anything for a month I suppose. Of all the games in the Activision back catalogue I'm quite surprised at how many I've already got or played! Here's hoping GOG continue to acquire some great games..... and maybe a few I'll have to buy!

I have to, unfortunately, agree. While it was great to see Activision titles showing up here, almost none of them were titles I was interested in or did not already have. It sucks, because I have a free game code itching to be spent and I was really hoping at least one of the Activision titles would fill the bill. Now, unless they do something spectacular this weekend, I'm just going to sit on it until the next big publisher announcement and hope that one turns out better for me.

Mark my words, Modern Warfare will NEVER be on GOG, and it will not be priced at less than $10 until MW 4 is out.