Even a sera sacu with just tele and shield has 35k hp. It might have the same cost as a telelazer but you don't risk much considering you don't die if you fail plus you can make the upgrades from a base sacu and therefore don't donate any mass since that's how sacu mass works. You also can make infinite teleboys in theory compared to the 1 acu.
Even if it's obvious that it's coming (which it's often not if you're lategame enough on a 20km map where team e income easily exceeds 100k) you still need proper defenses for every single smd. However usually you only fully defend the first smd since it is the most important one and if a tele acu snipes a less defended smd you usually have air waiting to snipe him, so it trades 1 player for 1 less crucial smd. But since you can stack up multiple tele sacu's it doesn't really work like this.
Altogether i think tele sacu's sniping smd's is too powerfull although i'm not exactly sure to what extent. Some discussions were had about this in some balance call but i'm not sure if there was a conclusion.
Imo what makes most sense is to swap tele and tml since the base hp gain from shield is the highest. You keep all functional ability combo's as well.
I'm not sure though why on the other end you created a mega stacked aeon tele sacu thats basically stronger (or about as strong) as the current sera tele sacu. It will get tele with a 40k hp shield