The first Avernum game is kinda desperately needing a remake by this point. What I love is that it's not just improved for every incarnation, there's also a ton of stuff added.
I've also always liked Avenum better than Geneforge, primarily because of the open world. I also find the setting more interesting, although it lacks the ethical dilemmas which has always been a strong point of Geneforge. I would actually rather see the next Avadon game, as it's a pretty cool game world, and I would like to see Jeff experiment more with improving the blatant ripoff of the Mass Effect follower system, as the lack of interesting PCs is one of the bigger weaknesses of the Avernum series.
I'm, as always, confident that this will be good. I've liked pretty much everything that Spiderweb has put out.