How much of this is because we go to a lot of parks so are used to seeing them though? Sure, to us, it's just another Top Spin, just another Enterprise etc. Do the GP see them in the same way? Of course many people will realise they're the same as ones they've seen elsewhere, but will they be as bored of them as we are? Note that none of us have even mentioned the rockin' tug, or the tea cups yet.
I agree that none of the flats at Alton really give a particularly big thrilling experience. However, without them, I wonder if there would really be all that much for the younger ones to do? Crucially, it also gives a few slightly more family rides in areas that are otherwise just for teens/adults. This is something they need to address at Alton as otherwise families spend the day separated. Removing rides like Blade would only make it worse. The last thing I'd want to see is for Alton to become another Thorpe.