It's not that I want every show to be tied, it's just that seems to be Toei policy. Space Squad stuff countinue Sen/Umeko relationship up to their marriage. Some VS movies countinue storylines from previous shows. At least Sentai-wise there is an intent to tie everything together. It wasn't there since day 1, but it is here now. Otherwise why specifically mention that Kyuranger take place in a different universe multiple times across different crossovers? There was an entire two-parter dedicated to Denzi descendants with flashbacks to Denzi Princess. Also weren't there plans to make a mini-arc with Denziman cast? Speedor and BeaRV marriage. I just don't understand point of trying to separate Gokaiger into their special "all teams are there" universe. It references characters and events from previous shows. MagiRed has post-series look, Jan has Long ball, Jetman tribute is canon period as far as I'm concerned, etc. We don't have any real context or evidence that previous 34 series were different in any form (aside from maybe Ban not wearing his Fire Squad uniform, which is far from conclusive evidence). While I'm here, Goseiger Returns references Legend War as well, stating specifically that it takes place a bit before that. You can't dismiss Zyohger vs Gokaiger thing as non-canon, because it features debut of Red's final form and it's important to the series story-wise as well (with all that backstory about ZyuLand). Similar things will happen again in the future, does that mean that any series to crossover with Gokaiger gets banished into VS universe? Trying to create multiple universes of the same characters just overcomplicates things (and Toei stuff do it just fine on their own). Countiunity errors are always going to be there with long franchises as I said. Classic Doctor Who had three versions of Atlantis, which were later retconned into being three different cities and don't even start with UNIT dating controversy, which in theory retcons an entire era of the show. Fans have been arguing over it for decades. These things just happen.