Health Savings Account - mid year changes and limits

Greetings -

We are looking for enhancements to our process to better support the Health Savings Account process.  We are using something similar to the sample setup for HSA, and are able to use this cleanly in Open Enrollment, and new hires.  We have associates enter the goal amount, which is divided by the remaining number of pay periods. However, managing changes has been a bit more complex.  We update the amount in benefits, and make adjustments in the element entries.  We are considering an enhancement using benefits balances.  Can we feed over payroll balances into the benefits balances, and write fast