It should be adjusted to be similar as before.
Increasing AP value in polys since the formula works with that now and block Aura and Blade from poly in war and sura so with this change they don't get too overpowered. That way ninjas and mage could make decent dmg (I lost 8k against Azrael, Dragon and in giants for example).
And ofc lower the required materials. Before the update for example the demon spearman poly craft was already "expensive" since you could fail and it required Demon's Keepsake's+ which only drops from the mages (which is a very low amount in the floors). Now it requires 24! And even toys which is a low lvl drop from those demi humans in city1/2 which already are not farmed since people go directly to valley or dark temple. So one needs to make a farmer or buy to someone which will exploit it and sell to you for a crazy amount (2.5 - 3kk just checked).
The animals polys are useless (because of their animation) and they require low lvl mats, which no one farms. There are many good polys which can be changed for them. Proud Dark Rifleman/Esoteric Executioner, Elite Orc Fighter, To Su.
The Savage Minion mats should be changed. The Shiriken+, which was already an expensive item and now it's even more. But this is not even the real problem here, the problem is that is only farmed through bestial mobs, so again, you need to make a farmer or buy for 4-6kk/u. It should be changed for Shiriken (which precisely drops from savage minions), ofc with a higher quantity requirement.
And then others polys where are needed mats like devil's splinter, demonic ashes, 50 blessing scrolls, 50 purple boxes, dark lord nail/fang, etc should be lowered or changed the mats as well. They are not that good compared to others to require that kind of materials and so many. It's crazy and makes no sense.
And there shouldn't be overpowered polys. Before the update all polys had the same dmg, but different speed attack because of animation. It's better to have them like that, with similar damage and other stats which makes them different. But all should be accessible (="easy" drop of mats) so that way people won't focus on 1-3 and all polys could be useful and all materials from different lvl ranges which are overfarmed and "useless" would have their use here.