While I have my doubts that the suggested changes will be enough, it does not solve the fundamental problem that Caldari EWAR is useless to solo players. I am by no means experienced with ECM at all, but from the way the mechanic currently works, even I can see that it is of no use to solo players.
If you truly wants the ECM change to be balanced you should apply the same mechanics to e.g. remote sensor dampeners and tracking disruptors, i.e. that the target can always lock the EWAR ship affecting it.
It simply does not make sense that the one race with only one type of EWAR loses its ability to affect its direct target with respects to itself. Generally, I think that various types of EWAR should apply more or less in the same way across the factions, i.e. does the EWAR ship benefit from the EWAR applied to the targeted ship (it may not be possible for all).
There are several ways you can balance this - level the playing field by applying the same mechanic to e.g. remote sensor dampeners and tracking disruptors (as stated above), introduce a second type of Caldari EWAR that can affect the direct target, or change the ECM mechanic itself so that it is truly balance (because of course it needs to be balanced). Plenty of suggestions have been made.
Why not spend time and resources on developing a truly balanced ECM mechanic rather than spend it on one balance iteration after another (which I think will take a long time anyway)? I think the current ECM change was poorly conceived and rushed from the beginning with too great cost and collateral damage to follow.
As I have said before, as long as Caldari EWAR ships are not a viable option for solo players, I personally consider ECM (since it is the only current Caldari EWAR type) to be broken and not worth using.
On a side note: I think it would be a good idea if you would indicate whether you actually follow/read this thread. Otherwise it could be conceived as you are not really interested in the feedback. You may or may not follow/read this thread, but we do not know when we receives no response from CCP!
I also saw a comment somewhere that it seems that there is more focus on inputs on reddit. If this is true (and I am not saying that it is, because I do not know) then you may as well close the forums, because what is the point of forums then?
Anyway, I sincerely hope that you will come up with some reasonably powerful and balanced Caldari EWAR that can make the Caldari EWAR ships worth flying for solo players.