Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
The newest version of eon actually does do what you mentioned but a little differently. If you decide you want to try it, let me know. I haven't heard anything about it yet but it was designed with exactly that in mind.
Here are some useful spreads for R/S dry battery that I found:
65705 - Calm 31/9/31/27/31/16
132519 - Bold 31/27/31/27/26/29
181346 - Quiet 31/30/27/27/25/1
212801 - Bold 30/3/29/30/31/12
264457 - Impish 31/31/31/26/30/4
280898 - Quiet 28/27/29/27/31/1
303092 - Brave 31/30/31/24/30/0
318944 - Jolly 31/31/25/0/30/31
436151 - Quiet 31/5/25/30/25/1
454718 - Impish 31/31/30/4/30/28
There are some more but I didn't list them as either I had better already or they were covered by Emerald. Notably there is a good Timid spread of 29/14/30/28/29/31 but there isn't much point in it unless you can get to the Southern Island due to the roamer IV glitch.