It is similar as rush TML on ACU, teamates join effort what destroy your eco (when do it alone) and then enemy eco by TMLing on end of T1 you dont get 40 K energy so easy. It is -350E/sec for 115second, so you need build 17T1 pgen only for build this upg and then would had +10energy.
Or get 2x Estorages +500mass and build it with 3long pause. Of course with more player you get it easier, but thats a point gain new tricky feature for player who play tricky strategies.
Example 4 ppl join efort on small RAS:
-87,5energy for all for 2 minute = must build 4,375Pgen more =330mass invest or 2 minute be behind with production, when end it all get +100 energy what is 12,5 more like he invest in start. for 2 minute behind with production. He reclaim thay 4,375pgens and get 80%back = 260mass. It is nearly mass uneffective to get.
energy gain can be +300 for 800 mass cost, then would had not so big impact, and would it be more risky. It is hard to say that it would be unbalanced, i read so many threat about unbalanced acu with TML, or about advanced RAS on sera/aeon what you get total free and it is unbalanced? with tml acu with luck you can destroy 8 mex on Wonder and easy win game only with this.
when you destroy at least 2 T2 mex it pay themself. This ras so not so effective, it give nomad posibility to had T2technology faster.
nomad are weak on end teching period, thay had 2,75 tech units on T3 and 3,5tech units on Exp. That is not bad, dont want to change it, but this small ras can help them go on this pahase faster because when this pahase would be done nomad would be behind.