In simple terms the SVP pools want to push higher transaction fees for when bitcoin go to 12.5.
The SVP is taking more then normal empty blocks to do this?
This is one issue I see with SPV.
I will write up like this. There is a river people need to cross it. So the King gave my fleet of boats 50 coins for making the trip empty or full. I was happy so I sailed boats to get my 50 coins from the king. As time went on people said wow I can cross the river on one of phils boats really cheap.
I got a tiny fee from the passengers but still got that 50 coins from the king. So I got me a lot of boats and my golden haired Norwegian relatives got in on the deal so we had 3 big fleets of boats and control 60 percent between us. While we are 3 separate fleets of boats we are countrymen and look out for each other.
The king see many boats crossing with lots of commerce his kingdom is growing. He decides to cut the coin fee subsidy to the boat owners from 50 to 25. Me and my two Norwegian countrymen see an opportunity. We can send some empty boats faster then full ones thus collect 25 coins faster then others.. At the same time this empty boat deal makes for less space on the entire set of all boats crossing. So since we control 60% of the boats between us we all decide to charge any passenger 0.0002 coins a trip essentially we are hurting quite a few people by this action.
This is one problem from SPV mining.
Forks soft forks and etc are more complex to explain but Kano can tell you how my boats could decide to cross a different river like we once did back in the summer of 2015 almost crashing all the boats since the fork was on the wrong side.
I am making it amusing but I am pissed at this. Basically I like to use those Norwegian fleets f2pool was my favorite pool to mine. I would do really high variable mining on solo.ckpool and on mmpool.org then balance it with 0 variable pool like f2pool. No can do since I now see a rocky road with SPV EMPTY BLOCK MINIG. I may need to stop at antpool and a few others.
This is an easy fix and or compromise and it is not being done.
here is one fix spilt the baby
miners can do 1 day on an spv pool and 2 days on a none spv pool = really easy fix here.
I now have 20 th on non- svp pools and 8.5th on spv pools