I thnk we are splitting hairs here but given the confusion in posts above, I think it is worth clarifying.
I like your pitch and crawl idea: OK, so that's all about needs, what works, size, weight etc. I think that will dictate a type and if you have really done your homework you would probably get it down to just one type (e.g. tunnel or extended tunnel). Even if two types will do the job (in different ways) you still have to decide! My contention here is that tents do fall into types.
My next contention is that every tent maker makes every type (OK, OK, that's not quite true) and you can therefore buy the type you want at different price points. I'm thinking that at this stage, price will trump marginal weight saving, quality etc. I wouldn't even begin to argue that my Robens at £170 is better or as good as a Hilleberg at £1000 even if it is adequate for the job.
You can then compare two or three tents for finer details but within your budget and, very importantly, all of the correct type.
From my features list above, let's say we relaxed the weight restriction a bit to ~4 Kg... Now I can have (even with Hille's lineup alone) the Kaitum 3, a Staika, a Tarra or a Keron 3, and which we'd choose (from a list that would include many others too) would depend on space layout and a crawl around, ease of pitching etc. and not the pole configuration.
That's a fair point but I'm sceptical as to whether weight will often put you into a different type. I would say type of tent will determine weight (e.g. one or two person) and then you can compare weights between tents of the same type. I accept that may not always be the case but it will usualy drive the choice.
I say all this simply to make it easy for people to navigate their way through thousands of tents. The real problem IMV is that people aren't sure about what type of tent they really want and end up comparing apples and oranges.