a ring that lowers speed reduction by 5% forever. so 25% would be 20%. or it could be a ring that lowers speed reduction by 20% of the total value, so 25% slow would be 20%, or 50% would be 40%.
or even...items that increase your buffs.
example:
a ring that adds 20% extra buff. so instead of raising speed 25% you raise it 30%.
We need some sort of weapon damage item that people take seriously. Perhaps a favor item with +5 - 10% weapon damage.
This is really nice, one of my favorite items:
Venom Stone
+15 Damage, +7% Attack and Movement Speed Aura
18% Chance on Hit of Causing 300 damage Over 4 Seconds
I like the idea of adding a spell resistance skill that would be better against spells than the AA, tower damage mitigation of armor . It would go a long way towards fixing the health stacking issue.
This could be difficult, you can either reduce AA damage or reduce all damage but you cant specifically target skill damage (i may be completely wrong). Will have a look tho 
a ring that lowers speed reduction by 5% forever. so 25% would be 20%. or it could be a ring that lowers speed reduction by 20% of the total value, so 25% slow would be 20%, or 50% would be 40%.
a ring that adds 20% extra buff. so instead of raising speed 25% you raise it 30%.
I could do attack speed as well i suppose but. I have done speed in one of the items Epiphenomenon mentioned 
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Slow Ward : On Use: produces a ward (15 seconds) that will apply a -30% Speed buff to ALL demigods in the area (range 18), and prevents speed reduction on the wearer demigod by more than 20%. Also passively heals ally's in range for 50 hps (total of 750 over 15 seconds).
This is a useful item against speed debuffing teams. Ie if you get hit by mines IV and MOTB you will be at the movement speed threshold right? so using this item will now set all the opposing teams (those in range) speed at a lower threshold and allow you to get away/ get a kill. Also you can use it for attack purposes, as it automatically grants you a 10% speed bonus while the ward is active, great for chasing, neither team goes very fast, but you can make good ground on a target in a small distance.
The buff idea would be very difficult, as each buff affects different things in the unit tables, you can alter a single attribute such as speed or health etc. but to change them all would take alot of coding.
a token that prevents you from being stunned. it gets used after a stun attempt fails.
A nice idea.
