Less expensive iceborn gauntlet with less mana?
perhaps give a way to adjust how much mana we want to pay for. from 300/400/500mana
rigtheous glory for example cost 2500 gold maybe gauntlet could cost 2700/2800/2900 based on how much mana you ask for. this can be retroacted/adjusted at anytime you base giving you back your money. so you could start with a 2900 gold gauntlet but when you build righteous glory you can get some gold back from the mana you won't be needing.
I'm looking to play udyr with this build:

But i feel like i'm spending too much on mana. granted he does need it. but the game has changed so much now its all about recalling and homeguarding out etc. rarely do people stay for extended time such that i never end up needing that much mana
people who want to build it with Muramana will most likely want the extra mana. or those who rely exclusively on it for mana. but a lot of people who mainly use it for the sheen proc/slow don't. This would be an awesome item on shen from example but paying that much for mana is ridiculous. same can be said of shyvana.