#Why does Pyke have an indicator to show when his ult will execute people, but Darius and Urgot don’t?
While we try to have parity and consistency across champion mechanics when possible, there are often exceptions to every rule.
When it comes down to decisions like these, we have to take into consideration every aspect of a champion and remember to not just look at each ability in a vacuum. Each champion (and each ability) has its own needs and goals.
For Darius, a part of his gameplay revolves around the ambiguity of whether or not his ultimate will kill a target. It adds excitement to the spell and is a way players express their skill and mastery by learning the perfect moment to land a killing blow as soon as possible.
For Pyke, we had different goals. A large reason we added the gold sharing mechanic was as a social release valve. We didn’t want to create a lot of unneeded friction between members of the same team because a support was taking all the gold. If Pyke’s ultimate was very difficult to pull off, we wouldn’t really be relieving tension between teammates as often as we’d like. His ultimate is also a skillshot, because we wanted to allow enemies to have a response and we wanted Pyke to feel awesome when he’s able to land a kill. If he doesn’t land the killing blow, it can put him in a very risky situation by blinking onto a target he expects to be dead. Additionally, Pyke is very fragile compared to Darius and Urgot. He lives on the razor’s edge. He needs to know “right now!” if his ult will kill someone because it can easily be the difference between his death or a pentakill.
All of this together meant that we didn’t really want to ask Pyke players to also judge the HP kill threshold themselves. There are already a lot of other skill tests they are undergoing with this spell (and elsewhere on the kit).
That said, we have seen this question a lot and have been talking internally about Urgot’s ultimate. We don’t feel like a players ability to judge “Yup, that looks like 25% to me!” is an important skill test for them either. So we will be adding the same kill indicator on enemies’ HP bars for his ultimate in a future patch.
Source: https://nexus.leagueoflegends.com/en-us/2018/06/ask-riot-executes-and-ssg-skins/
Urgot has since had one added I believe.
doesn't have an execute indicator for his R, every other champion with execute 
has it.
