So the gacha prices in Exos arent very good. There is a ginger lad who actually did a whale guide on youtube and mentioned which packages are worth it, and he makes a good case for what is an outright ripoff.
The big thing I would emphasize is keeping an eye on your achievements. There are so many ways to get xes before paying real cash, and they are totally things you are going to be doing anyway.
Probably some of the most stunning waifus collected in one game. I'm talking prime grade future ex-waifu material.
Exos Heroes still feels fresh. This means a couple of things. A) New content/charecters are constantly being added, there is a lot to do. B) There are truly some bizarre balancing/game quirks that will hopefully be addressed. Why these two points are so important is the meta for this game is SO volatile, with each week a new character/issue may be changed/fixed and decimate a previous thought unbeatable rotation.
It can be crazy frustrating in pvp, which is oddly the funnest puzzle to tackle. Because nothing is quite as funny/infuriating as beating the piss out of people one week, having One new character/FC drop(!), and now you are shit. I haven't seen a whole lot of nerfing, just counter meta characters, and it is really REALLY a fascinating way to go about handling balance.
This is one of the best gachas of the year.