Everyone keeps saying there is simply none of this and none of that and on and on.....
I have flown a full tilt El setup in some junky air and I was impressed with the power, the delivery of the power across the entire flight was really the most impressive part of it.
I am also witness to a new El setup on a profile right now. So far each flight has needed a new prop that required a different amount of voltage through the motor. This meant there volt meter was run on the motor for a sec so the proper rpm range/volts could be detected and set. This is no different then bolting on props on an IC and setting the needle with a tach.
Hunting for the "correct" prop for a plane will never go away. That part of the equation is a very real one and it takes many flights to get "the one" for a particular model that will work in most conditions. I dont see how what is turning it will take that part of the equation away.
I was also witness to what happens when one bolts on an entirely different type of prop and didnt remember to get [it] correct. About half way through a 2 minute test flight the system was smoking. At landing the ESC was melted. The motor was fried and wouldnt turn and the battery was burnt beyond use. This happened at about the one minute mark. Entire system gone. Start over.
I have had many accidental lean runs on my ICs, from FPs to PAs including some 4s, and not once did a one minute lean run toast the entire system front to back. I have run bad fuel, wrong fuel, not enough oil, too much oil, and every time I have been able to detect the problem and move on without the whole system being torched.
I saw a crash that totaled everything in the plane, motor, ESC, battery, the whole shootin' match. To come back from that would have required another plane (many people have back ups on hand no biggie there) and a WHOLE new EL setup front to back. Meanwhile I blasted a PA 65 straight into the tarmac! Switched planes, borrowed a header and pipe (you will find many of these in your competitors tool boxes

) bolted it to the just crashed PA65 added a new 3 dollar plastic tank and I was back in the air.
When I store my fuel in the garage it doesnt blow up. I have read story after story about so and so charging their battery and they had a fire or the battery heating up and was on the verge of catching fire. When I go to the field and refuel my plane I dont have to store the fuel in a fire proof case of some sort while it preps for use. This is a real concern and should not be overlooked by any means. I am not trying to make light of it because if you had a house fire due a model airplane battery you would be pissed off not to mention many other things. yes you have to safely store your fuel but that usually means out the reach of children and not exposed to open flames. That is all well within your own control and very easy to do. Battery fires can happen and do happen even when all the proper precautions were followed to the "T"
For 8 years in a row I had a flip and fly rig that was so repeatable I could go 6 months without changing the needle setting once. Then when it required changing it was usually about 1/4 turn out. Then continue until the flying season was over. Same motor, same prop, same PIPE! The only required maintenance was I had to change the tank twice due to the wear on the stopper from the oil. That is a $3 part and any hobby shop in the country. It was a top of the game rig too. Took me to the Top 5 twice, 1st time as the rookie, and had many many wins locally. All in all it is estimated it had around 2000 flights at is time of destruction.

There was mention of the return of the gas powered car over the past few years. I think that is mainly because the ease of running the engines at this point in time. They are very well constructed with very close tolerances that make for exceptional repeatable usable performance. The newer car motors can take a serious beating and never even think twice. They rev like it is nothing on 8%oil. I have an OS 26 4 stroke car motor that will rev 24000 rpms all day. I rebuilt it with an airplane crack shaft and put it on a profile. I used the correct small aluminum tuned pipe that is supplied with that motor. It would spin up 12500-15000 depending diameter on a small APC prop. It was really cool and VERY quiet. Loads of fun. They even have some IC car motors with electric starters right on the back of the motor. Hook up the battery and the glo driver and press the start engine button. It is pretty slick for sure.
I guess what I really trying to say is they (all systems) have their advantages and their disadvantages. What some will perceive as a disadvantage others will not. That is pretty much how it goes.
But one is not the be all end all better than the other when it comes to stunt. Stunt is odd in that there are so many ways to get to the winners circle and most if not all the time it is the person on the handle rather that what is bolted into the nose of the plane.
I look at all of this stuff from competitive pair of glasses. I follow the "If I think it can help me win I will do it" type of thinking. If it doesnt help the plane garner points of some sort it doesnt get added.
I am close to an El system that is being tested out, rung out, and worked out. If I can see how it would help me win I will steal the ideas and use them to my advantage.
All in all I think it will have its place and I think it will be a large place but the IC wont be replaced until it simply no longer available/legal.