No, just highly unfortunate...;)
I'd actually suggest quite the opposite! I'd love to have them still before me as fresh and new, yet-to-be-played. Jump in!
As for SS3, I do have to admit to having very serious concerns. Ultima Underworld constitutes one of my oldest and favorite games. It and Doom are what brought me to PC from Commodore 64. I play Thief to this day (literally--not two hours ago, I finished a play-through of the Grand Hotel of T2X with my preschooler) and I've pretty much loved everything (up till closing) from the Neurath / LG team. SS2 ranks up there with my faves as well, and SHODAN remains my phone's lock screen to this day.
Then along comes Otherside. Although I haven't played Ascendant, I don't think I ever will. It looks like saggy ass and the reviews aren't pretty either. I will likely never touch it out of fear that it will tarnish my memories.
And now they have SS3 in their hands.
1. Mr. "You can't make games for MIT grads" Spector has realized how wrong he was, has grown a bit, and can get his head (back) in the game.
2. Otherside have hired some competent artists. Apologies to those working on Ascendant, but it is butt ugly. Proportions of characters, animations, world design--all of it is so terrible and amateurish that I was just one of many calling it out since day one. It never improved.
3. That they don't succumb to the lure of the cinematic route, but rather let the gameplay do the talking as they did with SS2.
4. That they (this feels really weird saying this about a System Shock title, but here goes) don't go so overboard on gore factor (as this video starts to suggest) at the expense of what makes Shock what it is. Blatant gore is always inferior to well-delivered psychological horror.
5. That SS3 doesn't ultimately establish Otherside as the "Ruiners of Nostalgia"