I disagree that your opinion is the reason as to why dominion isn't as hyped about now then it was prior release.
The thing is, disconnections happen, it's natural, nobody has a 100% flawless internet connection or PC in general... In summoner's rift, the difference is VERY noticeable, underfarmed, underleveled, and an easy target for your rivals to feast upon. (Pun intended) In Dominion, after you've reconnected you're not far from your rivals as you would in summoners rift. To whoever says no, a 4vs5 in Dominion is VERY painful. You may come across it by having good 2by2 co-ordination, sure, but it's rare that these happens, muchless in SoloQ. 4vs5 is bad enough in Dominion, having a teammate underleveled too is going to just make it insanely worse. Considering games are a fair amount shorter, you have no margin of recovery either. Eventually in Summoner's rift, if your team was smart enough they either held defensively well enough so that you didn't miss any of the action, and took their numbers disadvantage to a roam and pick out targets one by one, eventually resulting into a positive turn.