I think what I'm doing and working towards is more akin to what I see in Endo's Aikido than what I see in Tissier's Aikido.
Tissier's teaching is very methodical. The Kata itself is broken up into "static" and "dynamic" versions.
When static, Uke is a relaxed mannequin. Articulation, balance, lines and angles can be isolated.
When dynamic, Uke responds in a martially aware manner, moving to keep up with Tori with the idea of eventually trying to overtake.
In the static cases, he emphasises that neither Tori nor Uke should move in ways that cannot be reproduced "in action" (ie; at full speed.) In other words, respect the speed you work at -- if you practice slowly, slow your reactions also. Because of this it should eventually be natural to switch between both static and dynamic practice as the movement stops and starts, and this can be seen in the video at the top of the thread in the "pauses".
Following on from Carsten's point, at a certain level having Uke "follow for the sake of it" is discouraged in favour of them looking to either show or exploit openings in the manner of Kaishi waza, so long as the movement does not open themselves up also. I think Tissier's "equalising
" exercise is how he introduces and later builds on this idea. (Please note I'm not saying that you endorse "for the sake of it" following, but following without purpose is an easy habit to get into in Aikido.)
Based on this, I think that Endo tends to work mostly in what Tissier would call the "dynamic" mode, which is of course much more interesting to higher level practitioners.