[Kameron8]

If they triggered on elemental damage instead, they would see more use.
or
Make them all give 15 of the stat they represent, and a barrier.

This is making things far more complicated than it needs to be. They have good bonuses and an interesting niche. Being able to get some use out of them the next round is all it needs to make them appealing picks. Frosttouch and Windswept can't even be used if you're slower, and Boltstruck and Flamedance both only give their benefit to the 2nd spell, since 3m is required to first trigger them.

Upping the duration to 2 is a very small tweak, and it would make a big difference. Revamping the items entirely is totally unnecessary.