Idea for more enjoyable BO5's.

So I got into watching e-sports thanks to CSGO about 4 years ago, and it's been great. Last summer some of my DOTA-playing friends got me into playing that with them, and through this I watched the last TI and the major following. I love/envy the size and format of DOTA tournaments, and I very much enjoyed watching CS summit because of the upper and lower brackets that are reminiscent of said tournaments. Watching this tourney with DOTA tournaments in mind, I do have some fresh criticism on the way the CSGO scene tends to approach BO5's.

Any little CSGO tourney I've watched over the years that has had winner/loser brackets and a BO5 final approached the situation by giving a 1-map advantage to the upper-bracket winner. This, however, is not the case in DOTA tournaments. The BO5 has no handicaps, the winner must win three games. This makes it a much more enjoyable viewer experience, and I think it also makes a lot more sense for determining who the truly better team is. CSGO games can be so fickle, evenly matched teams can trade games all the time. You wanna raise the trophy? Prove you're truly worthy of doing so by playing a true BO5 for it.

I realize the winners of the upper bracket should get some sort of advantage, but a handicap and an advantage are two different things. There's already in inherent advantage in that the UB winners get to watch the LB finals and size up their opponents, but the actual reward for not losing any matches should be that the UB winner gets to pick their starting-side on every map of the BO5. Your reward isn't a free-map, but the fact that you get to set the pace and tone for every game of the final match.

I think this, or some other advantage like it, would provide for a much better spectacle in the final match and for a truer measure of the teams' skills. Thoughts? Ideas for other advantages?