Nemesis did set a mould that Towers quickly broke with SW coasters... the ride itself was ready & working reliably for opening day. Sure, they had nowhere near enough queueline ready, but the ride was good to go.
Oblivion - ride basically not ready, constant breakdowns as trying to run with 7 trains from day 1. Queueline ready but "flowerbeds" littered with construction workers materials / rubbish.
Air - ride basically not ready, constant breakdowns for much of the first season.
Rita - Towers finally started to learn & were not hell-bent on having it open for the first day of season. That said, it opened with one train only for the first few weeks, so ride not ready, again.
Thirteen - I don't actually recall any major issues with this ride, so some credit where it's due.
The Smiler - the less said the better! Opening delayed, bits falling off the ride & I don't need to go on.
Wicker Man - the ride itself and the queueline / themeing were all spot on. Dreadful weather messed up operations on opening week. The ride did have reliability issues in it's first season.
Whilst Wicker Man had to be cut a little slack due to the weather issues, Towers record on having major new rides fully ready, open on time & running reliably isn't exactly brilliant.