There's a lot in there that'll be hard to achieve (my analysis in Dutch), a bunch of things that were mostly expected and aren't great, and of course a couple of good things too.
Especially considering that the party leaders won't be part of the government, I wonder how long it's going to last. It'll be hard for them to meet the party leaders' demands, and there are also bound to be things that aren't specified in the deal that'll cause friction.
I think usually something like that is intended to as a counterweight, to prevent power from centralising.
However, to prevent the scales from tipping too badly, a sufficient majority in parliament can override the veto, and I believe the party that's pushing this (Georgian Dream) has enough seats to be able to do this.
(Caveat: I'm not Georgian, so this is just based on somewhat above average interest in politics and in the country, following my local news.)