You can have a small pool with 100% of your stake as pledge it will have lower RoS than a big pool with 5% pledge, (and you will almost have an RoS almost identical than if you had 0 pledge in your small pool) . If you want to discuss it more in details the formula and its implications, please let’s do it in the technical post.
It depends delegators that know they delegate to a small pool know that they won’t necessarily get reward everyday, but when they get rewards they are much higher, so overall it does not change expected RoS. Personally it does not disturb me as long as there is at least one block per month let’s say. When you are lending money usually you don’t get interests daily so…
I can tell you that at some very early point someone delegated 70k to my pool and did not get reward for more than 15days, but when he did he had a very good overall RoS. It all comes back to why people delegate to you? Because they trust you or for higher RoS at a very specific moment?
But even pools that validate 1block a day will be significantly disadvantages by the new formula.