1. Fees of byteball network go to where? Is there by any chance to make it "feeless"?
2. What is the average transaction speed and does it take to much time do process usually? If it uses DAG, why the scale problem?
1: See section 13 in the whitepaper on "commissions". It's divided in 2 and goes to witnesses and the wallet referencing the unit. If the system is made fee-less, some other mechanism to prevent spam would be needed which could be PoW or pos or some combination/delegation.
2: Currently the tps rate rarely exceeds 2. Previous stress test showed capacity around 15. In other words, there's plenty of room to grow before current limitation to tps (unoptimized SQL) needs to be addressed. Tony has said that several things can be optimized to increase tps it that it doesn t really make sense to spend time on that at the moment. The speed of the DAG is determined by full nodes' ability to process new units. For the time being, it just doesn't make sense to spend time on that, though.