What I'd like to see is a system where the user gets to choose where their fee goes. I think we should have a base fee for the transaction data (0.001 grc/kb or whatever it is), then on top of that a base burn amount is required.
The transaction fee and burn amount together is the minimum that is deducted from claiming your RR.
On top of that, the user gets to chose where an amount of coins goes. You would get the option to send them too:

• The foundation
• A specific project
• A specifiable address
• Temporary "events" such as fund raisers and development bounties, which can be advertised from within the wallet
• Any combination of the above

This is very comparable to previous discussions on side-staking.

Alternatively, you can substitute the burn amount for an increased transaction fee, and it just goes to the staker of the block.

EDIT: I've been thinking and I would like to revise my original thought: If gridcoin is a research based blockchain, then why should we burn coins by deducting it from the Research Reward? Also, is it really "burning" if those coins never existed in the first place?

I opt for an implicit transaction fee based on the size of the data and a minimum claimable amount.