Space bar material is fact, keycap compatibility is fact. I don't know if you haven't had your morning Java yet or...?
Stating the space bar is made of ABS is a fact. Whether there is an issue with it being like that is an OPINION. Outside of the Massdrop PBT space bar offer, you don't have an option.
Keycap compatibility - This means nothing. Topre is not compatible with MX which is not compatible with ALPS which is not compatible with Buckling Spring..One thing that IS a fact is that there are more MX Keycap options available out there. That has nothing to do with the value of the keyboard. Novatouch sliders are a great idea, does that make it better than RF? Not at all. That would be your OPINION.
Can rubber degrade? Sure..are we seeing it happen? No...metal can corrode as well...Sliders that rely on friction can wear...You haven't even brought up the non contact portion of a Topre switch board increases reliability and longevity. Is the life expectancy of a Topre board less than Cherry MX? So far it doesn't seem like it...How many people are coming on complaining about a key that no longer works on their Topre board? To be honest, I'm not sure I even recall someone having an issue...
I get it..you don't like Topre..that's ok..you don't have to like everything. It is ok for other people to like something you don't. You don't see the same value in it they do and your mind is trying to come up with reasons why those people are illogically not coming to the same conclusion of your obviously superior mind.
So us stupid people that like Topre will just have to live in our ignorance. I actually Cherry, Topre and Alps...so I guess I am somewhat redeemable.
It really is interesting how many people are turning this into something opinionative / insulting. I am not insulting anyone's preferences at all. I really think the point I'm trying to make here is being missed.
Alright, the spacebar. So that's personal preference? Having a key of lesser material as the spacebar is not an issue? Maybe it isn't for you, but it is an aspect of the keyboard that IS technically inferior. The longevity of that keycap set is not the same as a full PBT set. That's just a fact, no opinions here.
Keycap compatibility. Does it matter? To me, yes, to you, no, doesn't mean squash either way. The fact is it's a measurable attribute. This keyboard is not compatible with a huge keycap format, the same way a piece of software is not compatible on some processor architectures. Maybe you prefer less compatibility? Ok, that's fine, but it doesn't even out the score card. This keyboard is simply compatible with a lower number of keycap sets. That's the meat of it. You can ignore that if you want, that's fine, but it's still a -1 for the Realforce.
Cup rubber. Sure, every switch takes some wear. I'm not even claiming they've had failures. I'm saying the feel of the rubber does change after some heavy use, and not for the better. I'm just saying, they're not perfect.
Now you can ignore all of those things, of course. You might buy the keyboard because you like the way the indicator LEDs look. That's totally fine, but it doesn't change the attributes of the keyboard.
It's just, when someone asks the question: "Is a Topre Realforce worth it?" I really wish I could say yes, but I have to say "Is it worth it to you? Hell, I have no idea, you tell me. Technically-speaking, it's not, but you don't have much choice when it comes to Topre, unfortunately". I can't really offer anything beyond that. Whether or not the keyboard is worth the cost to the OP is entirely up to him, but if you compare tech specs alone, the Realforce does not come out on top. For most people, it comes down to the fact that there are so few Topre boards out there to choose from, the Realforce wins by default.
I know I'm playing devil's advocate, but it just needs to be thrown out there. We need more Topre options. We're all getting shafted paying these prices for a keyboard that's been almost completely unchanged for over a decade. I'd love to see some custom Topres, but if I had to guess, their MOQ is probably insane and could only be handled by a large company that sells in brick-and-mortar locations.