Do you really like the 729 dragons? Are they very good in your opinion?
This is what I want to find out relatively soon. I will put them on 7 ply all-wood blades with hard top ply (e.g. Palio Way 002, Yinhe Uranus U2 or 729 Rose 7), then evaluate.
Another direction of rubber choices I make is to get pips out rubbers from various sources. I have found a few very interesting ones. Unfortunately for example, Kokutaku 110 is not ITTF validated anymore, but I still like using it - it has a very thick (directly comparable to H3Neo rubbers with 2.2 thickness) and hard (manufacturer said it is 35-38°chn, I think it is close to the latter) sponge underneath the cylindrical medium pips rubber topsheet (DMS Shockwave is what I hope, that can replace it in some ways). Kokutaku 110 is a bit dampened on low force strokes, but has a lot of gears, so it was like an etalon for me, when I discovered and tried.
Yinhe Neptune has already proven its usefulness on a Palio Chop No. 1 blade, but I want to try it on a normal sized, Off rated blade as well.
DHS Cloud and Fog III is something they say like an "attacking" long pip, made me very curious.
Yinhe Pluto has some resemblance to 729 563 Pro version for the 40% price of the latter (an advanced variant released long before "563 SP Legend"), sponge seems to be somewhat thicker, but definitely short of Kokutaku 110's sponge thickness.
Not in the image, but i also tried Meteor 71-2, which has a fairly slow sponge, but a very dense conical short-to-medium pip array, making mixing up opponent's rhythm and deceptive shots a real possibility.
I am also curious about the grippy pip heads of DMS Flashback (I have already tried Rebellion, but Spinlord Defender II blade is a bit too flexy for me, so I will go with something stiffer).
Victas 402 DE is my go-to rubber to be used on the pips in side of combination rackets.
So maybe I also getting a bit way too deep into EJ-ing, but from time to time, I come to interesting findings - and trying and adjusting to different configs are entertaining for me, helps with thinking about swing technique.