Originally Posted by Myrdin

Seeing as the Blooming itself consumes quite the number of gold coins, I find the option to save some rather nice.
Also the leveling up feels "faster" to me when its done with the L20 manyus once, instead of twice/thrice with the L5 ones. This is especially true the higher you climb on the current LVL.
Plus the option to make extra space when necessary is also quity handy.
Overall its a good function and I think many people would find it worthwhile, since I know for sure there are some guys here who are hardcore Inventory shuffle mages, unwilling to increase their space, thus having to play that Diablo-esque Inventory Tetris all the time

I'm not saying that the crafting is entirely worthless, just that it's only a way to reduce some gold costs and/or consolidate character slot storage for manyus. As for "feeling", I can't really address that; I promise you if you compare adding one L20 Manyu to adding three L5s you'll see that the latter option gives more exp (though it might be hard to see with high leveled girls). If it feels faster clicking just one Manyu to add instead of three, consider that you're actually spending -more- time overall clicking via crafting.

As I said before, it's a decent QoL change (and options are almost always better than not), but it's not a huge deal.